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.

The club travels to Nevada to store arms with a brother club; when the Mayans pose a threat, Clay decides to "patch-over" the tribe, making them an official charter; Tara's ex, an ATF agent, investigates SAMCRO.

Gemma hosts a town fundraiser, bringing the former club member responsible for Opie's arrest back to town; Clay deals with protecting a perverse parolee who can lead to a big payoff.

A small favor for Piney's old war buddy turns into a big problem for SAMCRO; Gemma deals with the effects of aging.

When old bones are discovered on the outskirts of Charming, Clay must deal with long-buried secrets; the club sets its sights on prize money in a bare-knuckle brawl; Kohn's investigation becomes personal when his true intentions are revealed.

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.

SAMCRO plans retaliation on a rival biker club while dealing with wounded Cameron Hayes in the clubhouse; Jax, Bobby and Opie try to end the gun debt for good.

With Stahl pressing the women of SAMCRO, Jax sees Unser as the key to salvation; Cherry reveals interesting information about her past.

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.

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.

Zobelle comes up with a problem that Hale can solve to frustrate SAMCRO. Meanwhile, Gemma being raped is really affecting 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.

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.

While Jax and Clay lock horns (and line up support) over how to deal with Zobelle, Tara finds herself ensnared in Gemma's emotional struggle in the aftermath of her attack. Meanwhile, SAMCRO gets help from an unlikely source.

Zoebelle incites Clay, who plans a course of retaliation, causing Jax to look to an unlikely source to keep the club from being destroyed. Tara learns from Gemma how an old lady handles anger.

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.

When SAMCRO's adult-film business becomes a hindrance to the club, Clay seizes the opportunity to revive the gun-running cartel. As Jax and Clay continue to clash over club activities, their relationship reaches a new level of antagonism.

Agent Stahl (Ally Walker) takes notice at the handsome profits SAMCRO is reaping from the repo business. Meanwhile, the Jax- Clay standoff forces Gemma to make a difficult decision.

While Opie seeks both revenge and reconciliation, Chibs makes a secret deal with Agent Stahl (Ally Walker) to protect his wife and daughter.

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.

To secure weapons and raise money for Abel’s search, the club exploits its porn connections to entertain Henry Lin’s clients, which doesn’t sit well with Opie (Ryan Hurst). Jax’s decision to search for Abel in Canada gets derailed. When Gemma’s dad goes MIA, her prisoner makes plans to do the same.

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.

To help Gemma, SAMCRO and Abel, Jax conspires with an unlikely source. Meanwhile, the MC puts Chucky undercover.

To protect their territory, SAMCRO must handle a rat at St. Thomas.

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 club embarks on a protection run, the likes of which they’ve never seen before.

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.

With a SAMCRO family member held hostage, Jax must choose between revenge and the good of Charming.

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.

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

SAMCRO encounters an unlikely foe when a piece of their business goes missing.

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.

SAMCRO enlists a former foe to help stop the advancement of Charming Heights, while the Sheriff presses Juice for more information.

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

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.

SAMCRO must put off an important vote to deal with an external threat.

SAMCRO gets word that the Niners have made a new alliance that directly impacts their own agenda.

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

SAMCRO faces a powerful adversary that threatens their business with the Cartel.

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.