A drama about the Sons of Anarchy Motorcycle Club Redwood Original (SAMCRO), whose members try to protect their town from drug dealers and developers while running guns themselves. In the opener, a rival club destroys Samcro's illegal-arms warehouse. Meanwhile, there's a medical emergency involving the newborn son of Samcro leader Jax Teller (Charlie Hunnam). Gemma Teller: Katey Sagal. Tara: Maggie Siff. Clay Morrow: Ron Perlman.
As SAMCRO deals with the aftermath of the illegal-arms-warehouse attack, the deputy police chief poses a new threat to the motorcycle club's power in Charming. Meanwhile, Jax continues to worry about the fate of his newborn son and begins to question the club's rough way of doing business; and Opie's financial woes force him to make a difficult decision.
When the young daughter of a prominent Charming family is assaulted at a carnival, SAMCRO members vie with authorities to capture the assailant. Meanwhile, a new shipment of guns arrives from SAMCRO's IRA connection, but there's a catch; and Tara's ex-boyfriend comes to town.
Club members go to Nevada to store arms with a brother club, the Devil's Tribe. And when the Mayans pose a threat to the Tribe, Clay decides on a "patch-over," making them an official SOA charter. Meanwhile, Tara's ex, an ATF agent (Jay Karnes), begins investigating SAMCRO.
At a town fund-raiser hosted by Gemma, the ex-SOA member who was responsible for Opie's arrest squares off against Jax and Opie. Meanwhile, Clay must protect a parolee who can lead to a big payoff; and ATF agent Kohn (Jay Karnes) continues to investigate the club.
A small favor for Piney's old war buddy turns into a big problem for SAMCRO. With Clay detained, it falls to Jax to handle it. Meanwhile, Gemma deals with the pangs of aging as well as the arrival of someone familiar whose intentions are unclear.
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, and Kohn's investigation turns personal when his true intentions are revealed.
SAMCRO must scramble to come up with cash to meet an IRA gun payment; the Mayans and Nords take a drastic step to bolster 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 ATF agent Stahl (Ally Walker) pressing the women of SAMCRO, Jax sees Chief Unser as the key to the club's survival. Meanwhile, Tara is still reeling from the Kohn situation; and Cherry reveals interesting information about her past to Gemma.
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 idea to raise money for Bobby's defense carries a significant amount of risk; Abel's homecoming could be overshadowed by more trouble for SAMCRO.
In the first-season finale, club members must reevaluate their bonds of brotherhood in the wake of a great tragedy.