When a rival club cleans out and then destroys their illegal arms warehouse, SAMCRO (Sons of Anarchy Motorcycle Club, Redwood Original) executes their own sense of justice in retrieving their guns. Meanwhile, family issues take center stage with a medical emergency involving Jax Teller's newborn son.

As the club deals with the aftermath of its illegal arms warehouse attack, the deputy chief of police poses a new threat to SAMCRO's reign over Charming; Jax continues to worry about his newborn son's fate; Opie faces a difficult decision.

The club travels to Nevada to store arms with a brother club; when the Mayans pose a threat, Clay decides to "patch-over" the tribe, making them an official charter; Tara's ex, an ATF agent, investigates SAMCRO.

Gemma hosts a town fundraiser, bringing the former club member responsible for Opie's arrest back to town; Clay deals with protecting a perverse parolee who can lead to a big payoff.

A small favor for Piney's old war buddy turns into a big problem for SAMCRO; Gemma deals with the effects of aging.

With the IRA gun payment looming, Samcro scrambles to come up with the cash; the Mayans and Nords take a drastic step toward strengthening their alliance; Jax finds himself in a dangerous position with Tara.

With Stahl pressing the women of SAMCRO, Jax sees Unser as the key to salvation; Cherry reveals interesting information about her past.

Clay's solution to getting cash for Bobby's defense leaves SAMCRO in a vulnerable position; Abel's happy homecoming ends in turmoil for the club.

After Gemma experiences something horrible she can't tell Jax and Clay. A rival porn producer comes to try and put Luanne out of business and Clay doesn't like Jax's decision making.

Zobelle comes up with a problem that Hale can solve to frustrate SAMCRO. Meanwhile, Gemma being raped is really affecting her relationship with Clay and the fact that Jax is involved with Luanne's porn business is bothering Tara. Clay decides to give Bobby the responsibility of running the business side of Luanne's.

Extreme measures are taken by SAMCRO to get a hold of weapons for a customer. A theft at Caracara Studios means revenge after one diva is put at risk. Tara's professional and personal lives begin to collide.