Grace is accused by Hebba, an Arab-American female student, of letting her individual beliefs about religion color her lectures. Taking offense, Grace chastises Hebba in front of the class, which leads to a boycott of Grace's classes by the religious groups on campus. Meanwhile, after helping Warren with his bar mitzvah and learning a bit about Judaism, Bobby demands to know why Grace never took him to church. Completely thrown by the accusations, Grace must explain to Bobby & Hebba what "faith" really means to her. Also, Jack helps Marcus out of tough situation.

Jack is mortified after Grace catches him buying condoms in preparation for his big night with Missy. Trying to be supportive of his actions, Grace insists that Jack talk to her about sex and questions him about whether he is sure Missy is the right girl. Meanwhile, Jimmy slips back into his old habits, forcing Grace to make a difficult decision about her family. Also, Bobby tries to help Warren win over his crush Deena but is surprised when she declares she has feelings for Bobby.

Peter is forced to take action after learning about the relationship between Grace and Tom. Meanwhile, Bobby and Warren decide to make some cash by doing yard work in their neighborhood and are shocked when they come across Jack's wallet in a neighbor's garage. After learning that his wallet was discovered and realizing who jumped him, Jack and Marcus take matters into their own hands.

To protect Marcus, Jack tells the police that he was driving the car the night Missy died. The guilt becomes too much for Marcus and he confesses to his dad, who immediately calls Grace. A surprising ally comes to Jack's aid after Grace demands that he tell the police what really happened. Meanwhile, the group's sadness turns to outrage after Reverend Belknap delivers a shocking eulogy at his daughter's funeral. Also, Bobby feels betrayed by the fact that Warren is moving to Chicago.