Zobelle comes up with a problem that Hale can solve to frustrate SAMCRO. Meanwhile, Gemma being raped is really effecting her relationship with Clay and the fact that Jax is involved with Luanne's porn business is bothering Tara. Clay decides to give Bobby the responsibility of running the business side of Luanne's.
After Gemma experiences something horrible she can't tell Jax and Clay. A rival porn producer comes to try and put Luanne out of business and Clay doesn't like Jax's decision making.
With the club divided in the wake of Donna's death, Clay sets up a new gun deal with the IRA. Meanwhile, a white separatist group takes root in Charming and threatens more than just Samcro's control over Charming.
In the wake of a tragedy, the club must re-evaluate its bonds of brotherhood.
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.
Jax must choose between friendship and the club when one member is arrested for murder and another goes missing; Abel grows stronger and is soon to be released from the NICU.
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.
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 the IRA gun payment looming, SAMCRO struggles to come up with the cash. Meanwhile, The Mayans and Nords take a drastic step in strenghening thier alliance and Jax finds himself in a dangerous position with Tara.
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.