The gang hope to be financially in the clear after their successful arms sale. But the ATF will be all over if they get linked to the warehouse arson where two Mexican immigrants were found. So the Sons exert pressure and call favors with authorities and auxiliaries, any way they can, including Jax's sexual excellence, to spy on and sabotage the investigation.
When the young daughter of a prominent Charming family is assaulted during a visiting carnival, Samcro races the authorities to capture the assailant. Meanwhile a new shipment of guns arrives from their IRA connection with an additional price. Tara's ex-boyfriend arrives in Charming.
The club travels to Nevada to store arms with a brother club The Devil's Tribe. When the Mayans pose a threat, Clay decides to patch-over the tribe, making them an official SOA charter. Tara's ex, ATF agent Kohn begins investigating Samcro.
Gemma hosts a town fundraiser, which brings the ex club member who was responsible for Opie's arrest back to town and into direct conflict with Jax and Opie. Clay deals with protecting a perverse parolee who can lead to a big payoff. ATF agent Kohn continues to investigate SOA.
A small favor for Pineys old war buddy turns into a big problem for SAMCRO. With Clay detained, Jax must step-up to handle the situation. Meanwhile, Gemma deals with the pangs of aging and the arrival of a familiar sweetbutt whose intentions are unclear.
When old bones are discovered on the outskirts of Charming, Clay is forced to deal with secrets he buried long ago. Meanwhile, the club sets its sights on prize money, backing Half-Sack in a bare-knuckle brawl. ATF agent Kohn's investigation turns personal when his true intentions are revealed.
Samcro scrambles to raise cash as the IRA gun payment comes due. The Mayans and Nords take an extreme step to cement their alliance. And Jax finds himself in danger as his relationship with Tara deepens.
As ATF agent Stahl pressures the women of SAMCRO, Jax looks to Chief Unser as the key to the club's freedom. Tara can't escape nightmares about Kohn. And Cherry reveals secrets about her past to Gemma.
One SOA member is arrested for murder. Another goes missing. Jax has to choose between the club and one of his closest friendships. At the hospital, Abel grows stronger, but he's not the only one coming home.