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.

When a prominent Charming family's young daughter is assaulted at a carnival, SAMCRO races against the authorities to capture the assailant; a new shipment of guns arrives from the group's IRA connection; Tara's ex-boyfriend arrives in Charming.

When old bones are discovered on the outskirts of Charming, Clay must deal with long-buried secrets; the club sets its sights on prize money in a bare-knuckle brawl; Kohn's investigation becomes personal when his true intentions are revealed.

While Jax and Clay lock horns (and line up support) over how to deal with Zobelle, Tara finds herself ensnared in Gemma's emotional struggle in the aftermath of her attack. Meanwhile, SAMCRO gets help from an unlikely source.

To secure weapons and raise money for Abel’s search, the club exploits its porn connections to entertain Henry Lin’s clients, which doesn’t sit well with Opie (Ryan Hurst). Jax’s decision to search for Abel in Canada gets derailed. When Gemma’s dad goes MIA, her prisoner makes plans to do the same.

14 months after going to prison on federal weapons charges Jax, Clay and the other SAMCRO members are released and return to Charming where they encounter new enemies in the form of a no nonsense sheriff and an Assistant U.S. Attorney out to nail the club for their dealings with Russian gunrunner Putlova. Also Jax makes a promise to Tara and Opie and Lyla get married.