Jax grows weary of the increasing lawlessness of the motorcycle club he is involved with. His life becomes more unstable when he discovers his late father's true vision for the Sons of Anarchy, and his crank-addicted ex-wife gives birth to his son.
A new deputy police chief arrives in Charming, and Jax suggests a non-unhappy way to throw him off Samcro's tail. Meanwhile, Opie is forced to make a difficult decision over his relationship with the Sons when Donna faces financial hardship.
Samcro members take arms to capture an assailant after the daughter of a prominent Charming family is assaulted. Meanwhile, Tara's ex-boyfriend pays a visit.
The club head to Nevada to help out a brother club, the Devil's Tribe, after they receive threats from the Mayans. Meanwhile, Tara's ex-boyfriend begins investigating Samcro.
A former Samcro member, who was the cause of Opie's arrest, creates tension at a town fund-raiser. In an attempt at a huge payoff Clay must protect a parolee. Meanwhile, the club is still under investigation.
Piney's old war buddy stops by and has a small favor that needs to be done and with Clay on a different project it is up to Jax to handle it all. Meanwhile, a familiar face from Gemma's past comes to visit.
When old bones are discovered on the outskirts of Charming, secrets that Clay buried are exhumed as well. Meanwhile, SAMCRO sets its sights on prize money, backing Half-Sack in a bare-knuckle brawl. Meanwhile, Kohn's investigation turns personal when his true intentions are revealed.
With the IRA gun payment looming, SAMCRO struggles to come up with the cash. Meanwhile, The Mayans and Nords take a drastic step in strengthening their alliance and Jax finds himself in a dangerous position with Tara.
SAMCRO plans to retaliate against a rival biker club while dealing with a wounded Cameron Hayes in the clubhouse. Meanwhile, Jax, Bobby and Opie set out to put an end to the gun debt for good.
With Agent Stahl pressing the women of SAMCRO, Jax sees Unser as the key to the club's salvation. Meanwhile, Cherry reveals some interesting information about her past to Half-Sack.
Jax must choose between friendship and the club when one member is arrested for hug and another goes missing; Abel grows stronger and is soon to be released from the NICU.
Clay's solution to pay for Bobby's defense leaves SAMCRO in a vulnerable position. Meanwhile, Abel's happy homecoming ends in turmoil for the club.
In the wake of a tragedy, the club must re-evaluate its bonds of brotherhood.