When a rival club cleans out and then destroys their illegal arms warehouse, SAMCRO (Sons of Anarchy Motorcycle Club, Redwood Original) executes their own sense of justice in retrieving their guns. Meanwhile, family issues take center stage with a medical emergency involving Jax Teller's newborn son.

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.

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.

Jax's loyalty to SAMCRO is tested when one member is arrested and another disappears. Meanwhile, Abel's improving condition could spur his release from the NICU, but his homecoming may not be the only one.

Clay's solution to getting cash for Bobby's defense leaves SAMCRO in a vulnerable position; 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.

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.

Since The League has SAMCRO members behind bars, the club must make new alliances in prison to survive. Alcohol, Tobacco and Firearms Agent Stahl uses this imprisonment to test Jax and Clay's relationship.

Extreme measures are taken by SAMCRO to get a hold of weapons for a customer. A theft at Caracara Studios means revenge after one diva is put at risk. Tara's professional and personal lives begin to collide.

Jax and Clay keep SAMCRO focused on their impending showdown with Zobelle's group; thanks to Gemma, Tara improves her job security at the hospital; Weston finally discovers his boss's intentions in Charming.

The second season ends with SAMCRO trying to get rid of Ethan Zobelle (Adam Arkin) and his cohorts once and for all.

The aftermath of Abel’s kidnapping has the Sons reeling - especially Jax, whose grief sends him into deeper turmoil over his future with the MC. Framed for murder, Gemma remains on the lam, and is hit with some unexpected news from her past.

To get intel on Abel’s whereabouts, Jax and the club help a bounty hunter track down a skip. They also press a source for answers about the attack at Half-Sack’s wake - the MC way. Meanwhile, Gemma deals with her father’s dementia.

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.

The Grim Bastards have a problem that could jeopardize Samcro's new business arrangements.

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

The IRA wants proof that one of their own has flipped and Samcro intends to give it to them.

While the club's on a man hunt, Jax faces the toughest decision of his life.

Both the ATF and the Russians prove obstacles as the club looks to heal old wounds.

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.

SAMCRO makes a run to set up a new business venture with their Tucson charter, SAMTAZ while Gemma makes a new ally in town with Police Chief Roosevelt's wife, Rita.

As Jax searches for who threatened Tara, she becomes aware of what's been going on with the club and warns Jax that Clay can't be trusted.

Jax and Tara get a glimpse of life without SAMCRO but discover that their reality is hard to escape.

SAMCRO negotiates with the Irish Kings to secure the club's future.

Jax faces a new challenge that threatens his family and SAMCRO.

Jax must overcome great obstacles as he attempts to finalize the gun deal between the Irish and the cartel.

Jax presides over SAMCRO as a series of events begin to unravel Charming.

A desperate situation tests familial and club bonds.

Jax attempts to pull Samcro into a new business venture.

Jax takes matters into his own hands as things go sideways.

Jax gets closer to the truth but there are still obstacles in his way.

Jax scrambles to put his affairs in order, while Nero handles business with his old crew.

Jax makes arrangements to take the club in a different direction.

Season finale:

As Jax continues to push the club into more legitimate businesses he can’t escape the sins of SAMCRO’s past.

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

An attack at the compound leads SOA to seek revenge.

The club is forced to make an uneasy alliance with unforeseen consequences.

Jax and the MC must confront their past and choose their future.

Triggers are pulled that strengthen the MC, but also threaten to destroy it.

Pressure mounts on Jax as the sins of his club and family pull him in different directions.

Jax learns new secrets that turn his world sideways.

Jax looks to push the club forward, but the Irish put another obstacle in his way.

Tension mounts as the club makes a bold move to finally get out of guns.

As the dust beings to settle Jax’s world is suddenly turned upside down.

The ramifications of Jax’s choices put his club and family in jeopardy.

In the wake of Tara’s death, Jax makes vengeance a club priority.

SAMCRO solicits help from another Charter to get a messy job done.

SAMCRO exploits an opportunity to secure an important alliance.

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

Looking for the source of a betrayal leads to violence at the Stockton Ports.

Jax settles a score by taking advantage of shifting alliances.

SAMCRO forges an unlikely partnership in order to undermine a powerful enemy.

With the search for a missing member at a standstill, focus shifts to flushing out an internal rat.

The club deals with heartache internally and conflict with the organization at large.

SAMCRO members fall in love, but death is in the air.

The SOA organization bears down on SAMCRO and Jax comes face to face with an ugly truth.

With tensions mounting and truths finally revealed, Jax must make the ultimate decision.

Ghosts loom large as Jax makes the final moves to fulfill his father's legacy.