A flashback to Ray and Abby's 21st anniversary when they went to Las Vegas to see Damon's first televised fight. In the present, movie star Natalie James hires Ray to protect her from an abusive husband/manager, which draws him deeper into Sam Winslow's web. Hopes for a beautiful day are dashed at Terry and Maureen's wedding as tensions flare between the Donovans and the Dohertys.

Ray cleans up Natalie's mess. At home, however, he struggles to reconnect with his family and complete anger management. Unable to reach Maureen, Terry visits Conor at military school. A surprise visit from Frank Barnes threatens to sink Mickey back into a life of violence. Bunchy happens upon the business opportunity of a lifetime to provide for Teresa and Maria.

Mickey's screenwriting dreams stall out - until he's pulled into a gruesome fix for Daryll's movie star client. Abby starts construction on the new bar while Ray searches for a solution to their problem. Terry tries to win back Maureen one last time; Bunchy's quest for financial independence gets derailed; and Bridget tells her boyfriend who her father really is.

Ray's therapy is at odds with the high-stakes power struggle between Sam and her opponents. Mickey - at Frank's behest - seeks out an old friend of the Donovan's. Meanwhile, Terry takes Damon to New York to train for a fight; Bunchy is confronted by sins from the Donovan past; and Bridget tries to reconcile with Smitty - until a major crisis forces them together.

Abby makes a shocking decision that reverberates throughout the family. Ray runs interference for Natalie, while Sam shows him the lengths she'll go to protect her empire. In his attempt to free Bunchy, Mickey finds himself caught in the middle of someone else's war. Terry visits with Bridget and discovers a truth that shakes him to his core.

A last-ditch medical trial sends Ray on a dark mission in New York. Alone in LA, Abby turns to Terry and Bridget to help her make the toughest decision of her life.

Natalie's fame puts Ray's career in jeopardy when, for the first time ever, he becomes the story. Mickey and Daryll celebrate getting the greenlight on their movie. Terry prepares to leave the Fite Club behind for good. Bunchy gets in over his head; Bridget takes Smitty's problem into her own hands; and Ray hunts down the source of Sam's problems.

Ray and Terry put their differences aside to try and fix Bunchy's problem once and for all. Meanwhile, Jay asks for a secret meeting with Daryll to decide the future of the movie and their relationship; Bridget's last-ditch effort to save Smitty lands her in an unexpected place; and in the wake of a tragedy, Ray turns on Sam - consequences be damned.

Ray searches for Frank Barnes in an attempt to get Bridget out of jail. Meanwhile in New York, Terry deals with the return of Damon's father and then takes care of Smitty at Bridget's request. Back in LA, Bunchy is hit with a heartbreaking confession from Teresa.

Ray goes to New York to arrange an illicit surgery that will hopefully save Smitty. Sam agrees to help - but only on the condition that Ray commit a brutal act. Meanwhile, Daryll struggles with his loyalties as Mickey tries to get himself out of jail by turning the tables on Ray. Season finale.