In the conclusion of the Season 4 finale, Jax meets with the Irish Kings to complete the cartel gun deal. Meanwhile, the Charming city council prepares to vote on Charming Heights; and the implications of Tig's dustup with the Niners become clear.

In Part 1 of the two-part Season 4 finale, Jax faces a new challenge that threatens his family and SAMCRO. Meanwhile, Gemma lays out some facts to Tara; and Tig gets in a tussle with the Niners.

SAMCRO must negotiate with the Irish Kings to secure the club's future. Meanwhile, Opie goes first to Gemma after learning about his father's death; Clay meets with Tara, and Jax meets with Wendy (Drea de Mateo); and Otto signs his agreement with Potter.

A powerful foe threatens SAMCRO's business with the cartel. Meanwhile, Jax confronts Clay over his mother's beating; Wendy (Drea de Matteo) returns to Charming, wanting to reenter Abel's life; Otto (Kurt Sutter) makes a deal with Linc; Bobby conducts some business with Georgie Caruso (Tom Arnold); Juice comes clean to Chibs; and Opie finds out about his father's death.

Jax and Tara taste life after SAMCRO, but discover just how hard it is to escape it. Meanwhile, Gemma discovers that Clay has emptied out the safe at their house; no one in the club can locate Juice; and Sheriff Roosevelt confronts Lincoln Potter.

The Niners have made a new alliance that causes problems for SAMCRO. Meanwhile, Tara asks Margaret Murphy for a favor but soon realizes that she won't be able to help; Gemma finds Piney's body and comes to a disturbing conclusion about how he died; and Linc has a clear-the-air meeting with Juice.

SAMCRO must put off an important vote to deal with an external threat.

SAMCRO deals with the fallout from a death threat against Tara while confronting another implication of the drug-mule deal with the cartel. Meanwhile, Potter pushes Sheriff Roosevelt to pressure Juice even more.

SAMCRO's ties to the cartel are jeopardized when an important package is compromised. Meanwhile, Opie and Lyla face a crisis in their marriage; one of Tig's daughters shows up with an urgent request; and Clay asks Romeo for a favor.

Sheriff Roosevelt leans on Juice for more information; Piney confronts Clay over John Teller's letter; and Bobby and Jax enlist a porn producer (David Hasselhoff) to help them solve the killing of Otto's wife, Luann, after a police report on the killing surfaces.

SAMCRO's first foray in its new business venture, a trip to Tucson, is complicated by a dispute with the local SOA chapter, SAMTAZ. Back in Charming, meanwhile, Gemma makes a new ally in her fight against Charming Heights.

While Clay and Jax campaign with club members for the Mexican-cartel deal, the Feds think that they might have found a way to take SAMCRO down. Meanwhile, Gemma confronts Tara about the note she found; and Kozik is challenged to a game of basketball.

Clay makes a deal with the Mayans that won't be easy to sell to the club, and the Russians aren't exactly in his corner, either. Meanwhile, Gemma worries about what Jax might have learned about her past when he was in Belfast, and the new sheriff, Eli Roosevelt (Rockmond Dunbar), makes his presence felt at SAMCRO's clubhouse.

As Season 4 begins, Clay, Jax and the other jailed SAMCRO members are released after a 14-month stretch and return to Charming—and a rude welcome from the new sheriff (Rockmond Dunbar) in town. Also new in town (and gunning for SAMCRO): Asst. U.S. Attorney Lincoln Potter (Ray McKinnon), who's probing SOA ties to Russian gunrunner Putlova (Keith Szarabajka). Meanwhile, Jax gets a warmer welcome from Tara (and their toddler), and makes a promise in return. And Opie and Lyla are getting married.

Pay Phone is the first of four Appisodes. Taking place on the 26th day of Jax Teller's incarceration, Jax is waiting in a line to use the telephone. A Russian inmate, Ivo Alexei, comes from the back of the line and stabs Jax multiple times with a shiv. The line clears out and Jax is left bleeding out onto the floor. This is the cause for the murder of the Russians in the premiere of the Season 4.

Piney and Tara is the third of the four Appisodes. On the 85th day of Jax's incarceration, a pregnant Tara enters the clubhouse to find Piney sitting alone, eating. He tells her that Gemma is in the office but she says she is there to see him. He offers her a cup of coffee as she puts her jacket on the back of the chair across from him. She says "no, thank you" before sitting down. He offers her a bite to eat to which she also declines. She says she wants to know more about John Teller's death. She asks if he thought it was suspicious to which Piney says "he was hit by a semi". She empathizes but asks if it could have been more than an accident, perhaps due to the club having so many enemies. He insists it was an accident before trying to rush her off. She informs him of having read a letter John had written. She says that Piney was his best friend but that he didn't trust Clay. Piney doesn't want to hear any more of it. A calm comes over him before he tells her that whatever she wanted to know, she really didn't, and that she should focus on her family and to "stay out of the club business". He's worried that she will get herself, Jax, or their two sons hurt. He sees she is saddened and tells her that whatever she read was "dead history". He gets up and walks off, leaving his steak, and his coffee, sitting on the table. Tara slowly gets up, holding her stomach, as the camera focuses on the picture of John Teller that was hanging on the wall behind them. She picks up her jacket, and as she walks off, crossing in front of the photograph, the scene fades out.

Second Son is the second of the four Appisodes. Taking place on the 196th day of Jax's incarceration, Gemma and Tara are sitting at a table talking when Jax enters. Gemma jumps up to give him a hug. He hugs her, and then hugs and kisses Tara. He tries to shrug off the injuries received from being attacked while waiting to use the pay phone. Jax gets to see his son, Thomas, for the first time. Tara didn't bring Abel, saying he had a cold, but would bring him next week. Gemma leaves to give Jax and Tara time to talk and Jax apologizes for not being there. Tara says that Gemma was in the room with her, to which Jax also apologizes. He promises never to be gone for anything like this again. Jax and Tara embrace while Jax holds Thomas between them. He comments "he's beautiful" as the screen fades to black.

Mexican Basketball is the last of the four Appisodes. On the 305th day of Jax's incarceration, Tig, Happy, and Juice play basketball in the prison yard. Clay, Jax, and Bobby discuss the new business venture with the Galindo Cartel. They agree to vote on it. Tig brings Clay into the game and Bobby asks Jax why he is so eager to back Clay's decision, being that it's just "an easy fix". Jax tells him that he's not looking for an easy fix, rather "something to make all this shit worth it". He tells him that "we need this, Bobby" and "don't try to kill it". Bobby is in disbelief and Jax marches away.