A Turkish cartel informs the Kinsellas that they are obliged to pay a sizeable debt owed to them by Eamon Cunningham. Viking is released from prison intent on making trouble, and a looming presence from inside the family returns.

All hell breaks loose with the unexpected arrival of a family member. While Viking welcomes him with open arms, the rest of the Kinsellas are not so pleased - most of all Amanda, whose leadership is threatened by his presence.

Bren's chaos reaches an apex, and the family is driven to mayhem. Michael and Viking both suffer heartbreak, while Uncle Frank seeks a change. The Batuks sew their own discord, and Amanda and Jimmy's son Anthony does the unthinkable.

The conflict is put into overdrive as Michael and Jimmy find common ground. Amanda proposes an unexpected partnership for mutual survival. Anthony and Nikita try to come to terms with the consequences of their actions.