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.

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.

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.