With the IRA gun payment looming, Samcro scrambles to come up with the cash; the Mayans and Nords take a drastic step toward strengthening their alliance; Jax finds himself in a dangerous position with Tara.

Donna's death has the club divided, with Clay setting up a new gun deal with the IRA. Charming and SAMCRO 's hold on the city is threatened after Ethan Zobelle a sophisticated separatist opens a tobacco shop. Zobelle and his less-sophisticated associate are determined to take SAMCRO down due to their black and Latino bikers.

Tensions between Jax and Clay escalate when they disagree over strategy for rescuing Tig after he's captured by bounty hunters on a gun-running mission. Back in Charming, Gemma is rattled by a graphic reminder of her attack, and she sets out to do something about it.

Jax and Clay head towards Canada after Jimmy provides misleading intel on Abel’s whereabouts. The rest of the club splits off to help Happy with a pharmaceutical favor in redneck territory. Gemma tries to put old family matters to rest.

When SAMCRO pays a visit to another charter, not everyone’s happy to see the mother chapter.

After exacting their revenge, SAMCRO is forced to make a decision that could cause a huge shift in the club.

SAMCRO’s relationship with the Cartel is in jeopardy when an important package is compromised.

Anticipating backlash, Jax goes into high gear with his own agenda.

Jax secures a new alliance for the club while Clay makes moves inside for protection.

Jax learns new secrets that turn his world sideways.

A past effort to help one ally leads to trouble with another.

Jax settles a score by taking advantage of shifting alliances.