The lives of a Dublin family embroiled in a gangland war and the consequences of their choices.
The Kinsellas are a small but tight-knit crime family in Dublin, Ireland, increasingly at odds with a powerful drug cartel. When the hotheaded son of Frank Kinsella gets into a violent confrontation with one of Eamon's men, the Cunninghams retaliate.
The Kinsellas deal with the fallout of Cunningham's retaliation, while Mikey is torn between wanting to help Jimmy seek revenge and staying out of the fray so he can see Anna again.
The Kinsellas bury one of their own as they prepare for an all-out war with the Cunninghams. Michael and Jimmy set a plan in motion for revenge and Amanda orders her first hit
The walls are closing in. The Kinsellas are blacklisted by Eamon Cunningham, but necessity is the mother of invention. Amanda pitches an idea to force Cunningham back onto his heels.
With the Kinsella family now in serious danger, Amanda takes action.
Amanda is hellbent on making Viking pay for his actions, while Eamon takes part in an Ayahuasca ceremony with his cancer-ridden ex-wife, and Michael has another ill-fated meeting with a daughter whom he cannot protect.
Frank visits his brother Bren in jail and remembers why he is not a man to be trifled with. Danger lurks around every corner, and Amanda and Michael come to a realization.
Eamon and Amanda meet to discuss a way to end the war, but the proposal does not go over well with her. Jimmy and Michael meet at the crossroads, and the family gathers for Jamie's memorial service.
A new threat rears its head when members of a Turkish cartel inform the Kinsellas that Eamon owed a them sizable debt and the debt is now theirs.
All hell breaks loose with the unexpected arrival of a family member and while Viking welcomes him with open arms, the rest of the Kinsellas are not so pleased - most of all Amanda.
Family loyalties are tested as Bren's influence seeps into each member of the Kinds clan, while Viking receives unsettling news and the police gain important information.
Amanda is feeling the pressure as Bren continues to undermine her power and the Gardai focus their attentions on her operations.
Viking is put in an impossible position. Amanda loses trust in part of the family. The police move closer to the Kinsellas. Michael forges an intimate connection.
Bren openly seeks out Anna against Michael's wishes, Amanda looks global for business opportunities, and Viking's allegiances are tested when the police interrogate Nikita.
Bren's chaos reaches an apex, and the family is driven to mayhem. Michael and Viking both suffer heartbreak, while Frank seeks a change. The Turks sew their own discord, and Anthony does the unthinkable.
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.
