The guys hire Dee's friend, Terrell to promote the bar. Meanwhile, Charlie tries to prove that he is not a racist.

A girl from Charlie's past reveals they have a child together. Mac sees the benefits in being a pro-life advocate, while Dennis uses an abortion rally to meet women.

After reminiscing about high school, the guys conclude that it would be a public service if they allowed teens to drink in the bar, thus providing a safe and controlled environment for teens to party. Feeling that she missed out on a lot as a teenager due to having to wear a brace for her scoliosis, Dee begins dating a high school jock.

After discovering that he might have cancer, Mac and Dennis attempt to find a woman who will sleep with Charlie. In the midst of their search, Mac falls in love with a transsexual he meets at the bar named Carmen. Overwhelmed by the extra workload that she had to take on since Charlie has taken a leave of absence, Dee tries to get Dennis to hire a recently out of work actress friend to help out.

The guys buy a gun after the bar's safe is stolen.

Mac and Dennis befriend a patron found dead at their bar in order to win the affection of his granddaughter.

Charlie and Mac's old high school gym teacher is accused of molestation.

An accident that puts Charlie in a wheelchair opens up a window of possibilities for the gang. Meanwhile, Dennis and Dee’s estranged father reenters their life in hopes of starting anew with his children and soon discovers that he enjoys the lifestyle of their friends.

When the gang learns that they are in danger of losing their bar due to a zoning mishap, they resort to some outlandish and extreme methods to prevent that from happening. Meanwhile, Frank isn’t too happy when his wife returns to town.

After quitting their job due to Frank's continuing interference, Dennis and Dee decide to seek alternative income by going on welfare. Meanwhile, Mac and Charlie must now bear the consequences of their friends’ departures from the business.

Barbara hooks up with Mac to make Frank jealous, which leads to retaliation from Dennis.

Frank runs into an old adversary at the gym when he begins teaching Dee to box after she was robbed. Hoping to make some extra money on the side, Mac and Dennis make preparations for Charlie to compete in an underground street fighting match.

After being arrested for arson the gang is sentenced to do community service. Frank makes an effort to connect more with Dennis. Meanwhile, Charlie is also ordered to attend AA where he makes a startling discovery that might be beneficial in his ongoing quest to hook up with the Waitress.

Mac and Dee become uncomfortable when the rest of the guys decide to make some extra money by exploiting the similarities between a water stain and the Virgin Mary. A reunion with someone from the past, stirs up forbidden feelings within Dee.

Driven by Frank's insight into the world of politics, Dennis pursues a political career by running for office.

Dennis and Mac make a decision to take away all rules concerning moral and behavioral etiquette at Paddy's after an argument about the Constitution. Frank uses the decision and it's following consequences to his own gain. Meanwhile, Charlie tries to convey his love for America by protesting while Dee attempts to reaffirm her goal of being an actress.

Dee receives e-mails from a stranger claiming to be her and Dennis' real father. Meanwhile, Mac decides to visit his father who is in prison.

Dennis joins up with an environmentalist group, but his altruistic intentions quickly sour when he's snubbed by the activists. Dee and Mac decide to raise a baby they find in the dumpster, but quickly find out that it's not nearly as fun as they thought it would be, and Frank and Charlie take the concept of recycling a bit too far.

Mac, Dennis and Dee try out for the Philadelphia Eagles. Also interested in becoming an Eagle is Liam and Ryan McPoyle's brother, Doyle.

After Barbara's death, Dee and Frank are unhappy to learn that she left them both out of the will, while Dennis inherits the mansion which he plans to turn into a party pad.

The McPoyles hold the entire gang hostage at Paddys while Frank is busy searching for his will in the air ducts.

Dee is shocked to learn that an overweight social outcast from her High School has become a rich and skinny fashion designer.

A Korean restaurant owner threatens to get Paddy's kicked off the route for the city's annual pub crawl. The gang's response: War.

The gang agrees to sell Paddys when they get an offer that is too good to refuse, but it forces the bar's non-partners, Dee and Charlie to find new jobs.

Mac teams up with Frank and Charlie to create a public access newscast after he misses his chance at fame in the news. Meanwhile, Dennis and Dee try to make it big in the club scene.

Dee gets involved with a famous local rapper who might be mentally challenged, and whose success inspires the rest of the gang to start a band.

After Mac arrives to the bar with scratches on his neck and exhibiting strange behavior, Frank comes to the conclusion that he is the serial killer terrorizing young women in Philadelphia. Frank sets out with his trusty chainsaw and a doubtful Charlie to find evidence to implicate Mac in the murders. In search of another suspect, Dennis and Dee do a little role-playing in order to help themselves better understand who they might be dealing with.

When Dennis is mistaken for a recently released child molester, he is more bothered by the fact that the guy is overweight rather than him being a sex offender. Meanwhile, Mac tries once again to bond with his ex-con father, who shows an interest in Dee.

After stumbling upon a kilo of cocaine, the gang is forced to pay off a $25,000 debt to the mob. Mac becomes a mob informant, while Frank pimps out Dennis as an escort at the local country club. Charlie stumbles upon an opportunity to sell illegal narcotics.

While paying off their debt to the mob, Charlie and Dee try to find a way to make fake cocaine in order to fool them, while Dennis ranks in thousands of dollars being pimped out at the local country club. Mac realizes his position as a mob informant isn't being utilized to its full potential.

Mac and Dee become vigilantes in order to remove the homeless from their neighborhood, while Frank and Dennis impersonate police officers.

In the season finale, Charlie accidentally puts Paddy's up as a prize for a dance marathon, which prompts the gang to enter the competition in order to save their bar.

Charlie and Dee have been stealing Frank's delicious meats, so Frank leaves out human meat to get back at them. Driven by their cannibalistic needs, Charlie and Dee go in search of human flesh. Mac and Dennis harass Frank for hunting defenseless animals and think it would be much more badass to hunt something that could fight back ... like a human.

Charlie, Mac, and Dennis formulate a plan to take advantage of the rising gas prices. By purchasing excess amounts now, they can sell it in the future and profit. As usual, things don't go as planned. Dee is also out to make money when she learns that Bruce is going to give the family fortune to a Muslim cultural center. She and Frank try to stop him and get the cash for themselves.

Due to the gang's latest "business expenses," Paddy's is in dire need of money. Frank buys a billboard to advertise the bar, but Dee decides to create a viral video to post on YouTube for promotion. Charlie quickly joins her, leaving Frank and Mac to hold a contest for some hot models to feature on the billboard. Naturally, Dennis joins the competition to prove his worth.

Charlie finds out that the waitress has been seeing someone. He calls on Mac, his so-called best friend, to find out more information about the guy and to beat him up. However, it turns out that Mac is the guy the waitress has supposedly been seeing. Dennis, heartbroken that he's not Charlie's best friend, tries to win him over.

Part 1 of 2. Mac and Charlie fake their deaths to avoid the wrath of Mac's father who was released from prison and is out for vengeance.

Part 2 of 2. Dennis, Frank, and Dee find unique ways of coping with the apparent loss of their friends.

Charlie and Frank awake to find poop in their bed. Neither will confess to being the owner, so they, Mac, and Dennis try to scientifically deduce who dropped the deuce. Dee wants to do something a bit more sophisticated, so she invites the waitress and Artemis to a girls' night out.

A newspaper critic is kidnapped by the gang after he calls Paddy's pub the worst bar in Philadelphia.

After discovering Dennis' erotic memoir, Mac and Frank attempt to make some money off of it. Meanwhile, Dee and Charlie decide to spend a day in each other's shoes.

After Dee suffers a heart attack, she and Dennis try to live a healthier lifestyle. Meanwhile, Charlie and Mac take corporate jobs to get health insurance.

The gang fudge history by claiming that Paddy's Pub was responsible for cracking the Liberty Bell in an attempt to turn their dive into a Philadelphia landmark.

Hoping to make their own dreams come true, the gang sets out to give an unexpected family an extreme home makeover.

In the season finale, Charlie gets the gang to help him put together a rock opera based on his song "Nightman."

Dennis, Mac, and Frank go into real estate, while Dee sets out to be a surrogate for a wealthy couple. Charlie gets into it with an attorney over the law.

The gang tries to expand their horizons by going on a road trip to the Grand Canyon.

With a shantytown taking shape outside, Mac and Dennis try to keep Paddy's going in tough times. Meanwhile, Frank and Dee start a family business.

Frank's behavior is more bizarre than usual---so bizarre that even the gang notice---so they decide to stage an intervention.

The waitress is getting married, Dee is jealous that she's beating her to the altar, so she tries to derail the wedding.

The gang describes the trials and tribulations they went through, during game five of the World Series, in hopes the judge will clear them of all the citations they received.

The gang puts together a wrestling show for returning troops. Meanwhile, Dee finally meets the soldier that she has been communicating with over the internet.

The gang decides to expand their business by developing a number of products that they could sell at Paddy's pub.

Mac and Dennis decide that they need to spend some time away from each other. Meanwhile, Charlie helps Dee search for her cat.

Dennis reveals his foolproof system for seducing any woman to the rest of the gang, but they don't grasp the concept.

When Dee gets a part in the new M. Night Shyamalan film, Mac and Charlie seize a chance to pitch their movie script.

After being banned for 10 years from a local drinking competition appropriately named "Flipadelphia," the gang tries to reignite their old rivalry with another local bar. Finding that they are in need of some serious practice, the guys head to Dennis' old fraternity house at the University of Pennsylvania to get their game up to speed while Dee hones her skills on her own. Frank wears skinny pants.

Mac defends traditional marriage, while the rest of the gang reaps the rewards of wedded bliss.

Marital bliss turns into business, as the gang experiences the emotional and economic hardships of divorce.

The gang attempts to find adventure on the sea after they purchase their 'new' boat.

Mac finally gets his big break after correctly answering a trivia question on the radio. While Frank, Dennis, and Dee take their bar-banter to the internet with their own podcast.

Rejected from a pool club, Mac and Charlie set out fix an abandoned pool to help cope with the Philly heat wave. Meanwhile, Dennis and Dee go about dealing with the heat in a different way.

Mac's mother is left homeless after she burns down her house, which leaves Charlie and Mac with no choice but to make new living arrangements; when Dee feels under the weather, Frank tries to muster his paternal instincts to care for her.

The gang gets a real scare after Dee reveals she's pregnant, forcing the guys to recall their last hazy Halloween party to determine who the father is.

A blast from the past prompts the guys to expand membership, and Dee to re-consider her future.

Motivated by the drama teacher who inspired her, Dee takes a job as a substitute teacher, and exposes her students to the culture of Paddy's with a field trip to see the Gang's take on the Lethal Weapon series: Lethal Weapon 5.

Keeping the basement rodent-free drives Charlie to the brink. The gang throws Charlie a surprise party.

En route to Atlantic City for a charity event, Mac, Frank and Dee get lost. Meanwhile, Dennis and Charlie hitch a ride to town.

Dee's blessed event is fast approaching but the father's identity remains a mystery---to the gang, at least. So they throw a party and invite all of Dee's former flings.

After years of being mistreated by Frank during the holiday season, Dennis and Dee decide to teach him a lesson. Meanwhile, Mac and Charlie reflect on their childhood Christmases, and realize that they were not as joyous and wonderful as they remembered.

With Frank intent on marrying a prostitute, The Gang tries to make the best of it by attempting an image makeover to uncover the heart of gold that exists deep inside Frank’s “pretty woman.”

Dee and Dennis take the gang to their favorite childhood vacation spot where things aren't quite how they remember. While Dee and Dennis see the seedy side of the Jersey Shore, Mac, Frank and Charlie have the nights of their lives.

Frank finds himself in the child beauty-pageant business and fears that people might think that he's in it for the wrong reasons. Meanwhile, Dee wages war on stage moms, and Mac, Dennis and Charlie think they have found a contestant to back.

Dee faces an IRS audit over her claim that the baby she carried as a surrogate is her dependent, while the guys decide to run the bar in an unemotional, democratic manner rather than their typical method of shouting and personal attacks.

When Frank's long lost brother Gino shows up at the bar, the two of them tell the gang about the jazz club they ran in the 1960s and 70s, and how they fell out over Shadynasty, a singer who was the love of both of their lives.

As a hurricane threatens Philadelphia, Mac, Dennis and Charlie go to a mall to buy supplies and check out the large breasted TV reporter broadcasting from there, while Frank and Dee prepare Paddy's, and its basement bunker, for the storm.

The gang plays the most twisted board game ever. Dee and Dennis face Mac, Charlie and Frank.

The gang uses the Internet to cyber-stalk their prey. Frank tries to drum up business for Paddy's with a viral video.

The Gang's plan to "extract" an "artifact" from a residence is jeopardized when the owners turn out to be home. Having not been noticed on the way in, they must make a plan to get the same result for the way out.

Step inside the confession booth with Mac as he tells a befuddled priest why his fatness is the fault of the other members of The Gang.

Traffic problems as a result of the President's visit to Philadelphia makes it difficult for the gang to see the summer's biggest film, "Thunder Gun Express".

The gang have much to prove when they attend their high-school reunion. They meet old friends and make new foes as they stroll down memory lane.

The gang come up with a new plan to buff their tarnished high-school reputations at their reunion.

Dennis and Dee's ailing grandfather Pop-Pop is wasting away in the hospital, and they have to decide whether or not to pull the plug. But things get complicated when The Gang learns of Pop-Pop's history as a Nazi, and Mac, Charlie and Frank set off in search of the old man's spoils from the war.

With the garbage men of Philadelphia on strike, Frank concocts a plan to undercut the union and get the contract to collect the city's trash.

The gang make a disturbing discovery after crashing Maureen's wedding.

Charlie and Dee become romantically involved with two members of a wealthy family, which arouses jealousy in Mac, Dennis and Frank.

The Gang gets Freudian as they step into the therapist's office to work through their mountain of issues, but when Dennis thinks he has everyone figured out, the shrink turns the tables on him and exposes the insanity in his unique brand of pop psychology.

Mac, Charlie and Dee struggle with their faith as Charlie's mom fights cancer. Meanwhile, Frank loses his memory amidst a search for buried treasure.

With Charlie under his wing, Frank cleans up so he can get his hands dirty and help out his old company with one last big merger. An unwritten rule of the bar gets the rest of the gang caught up in a case of mistaken identity.

After slipping into an unhealthy obsession with computer games, The Gang wrestles to define the difference between the real and the virtual worlds.

Every member of The Gang has something to celebrate at Guigino's, Philly's finest eatery, but when Mac and Dennis' private dinner is interrupted by an unexpected sighting of Frank and Charlie, the in-fighting begins. Dee also turns up at a table for one, and over the course of the night, the "one-ups-manship" soars to new heights.

Court is in session at Paddy's Pub as Frank and Dennis present their cases to the rest of the gang, resulting in a verdict that will change their lives FOREVER... but not really.

The gang attempts to cheer up a deeply depressed Dee, realizing they are the cause for her predicament.

After Frank appears on Local Television advocating gun ownership, the rest of the gang takes a look at the ownership process and alternatives to find a common ground on this still heated issue.

Tired of failing to be recognized for their years of service in the bar industry, the gang changes their ways to give the patrons what they think they want.

The gang does their best to recoup their investments in questionable schemes by dumping their losses on Ben the soldier while trying to avoid being duped again by whatever mastermind is pulling their strings.

Everyone in the gang gets a day to do what they want while everyone else in the gang must participate willingly. This is Mac's Day... and its got twice the "Mac".

A routine trip to a convenience store places the gang in the middle of an armed robbery.

The gang voluntarily quarantine themselves inside of Paddy's in an attempt to keep their singing voices pristine for an upcoming competition when a severe flu outbreak sweeps Philadelphia.

When an experiment successfully multiplies Charlie's intellect and takes him away from the bar, the rest of the gang find themselves struggling to complete the menial "Charlie Work" that has kept the bar running for so long.

After creative differences over what constitutes tasteful nudity cause Frank to pull his money out of "Lethal Weapon 6" during filming, Mac, Dennis, and Charlie screen their rough footage for investors in hopes of raising enough capital to finish the production of their latest masterpiece.

When some bad blood with old foes compromises their ideal Thanksgiving, the gang decides to make amends by breaking bread with those they've hurt.