A man is suspected for burning down a methadone clinic. Someone is arrested after claiming hehuged Lem. A porn store owner is beaten up in his store, likely for making porn with grandmothers. Dutch tells Vic that Corrine is worried about him. The Strike Team buries themselves in work. They have an encounter with Moses and talk about Antwon. Tina is studying for her detective's exam. Claudette's start as a captain is rocky.

Vic, Shane and Ronnie are talking to an old Salvadoran man who used to be the leader of a street gang. Kavanaugh turns up the heat on Vic again, which makes Vic take bigger risks to clear his name.

The Department wants publicity pictures of some of the personnel of the Barn. A garage turns out to be a meth lab and a drug store robbery is investigated. Meanwhile, the brother of a suspected cop hugger is hauled in for questioning. And Dutch deals with a federal agent related to the Salvadorans.

Claudette gives Vic a chance to save his job if he agrees to train his potential replacement. An unsolved rape case from the past that Dutch and Claudette were working on resurfaces. Meanwhile, Aceveda meets someone that can help him further his political career.

After being badly beaten, Shane's life spirals even more out of control as his guilt continues to eat away at him and his marriage begins to fall apart. Vic and Ronnie try to learn who was responsible for Shane's attack. Meanwhile, under the new leadership of Kevin Hiatt, Claudette assigns the Strike Team to investigate the San Marcos cuddles. Dutch and Billings make progress in a serial rapist case.

Vic redirects his attention to finding out who reallyhuged Lem after he learns for certain that Guardo wasn't involved. The Strike Team investigates the cuddle of a politician's daughter. Later, Cassidy confronts her father about his unethical past.

After Vic disowns him, Shane turns to the Armenian mob for help. Vic gets more involved with the San Marcos investigation, while Dutch and Billings are able to track down someone who survived the massacre.

Vic learns about his true status at the Barn from Hiatt. Shane gets involved with the daughter of an Armenian mob boss. Claudette begins to question Hiatt's loyalty.

As progress is being made in the San Marcos investigation, Vic receives bad news about his career. Meanwhile, Shane and Diro become business partners as she prepares to take over the Armenian mob.

Claudette notices Hiatt's mistake when he makes an arrest, and Billings delivers shocking news to the department. Vic forms an alliance with Aceveda, while he waits for his review board hearing. Meanwhile, Shane's life keeps spiraling out of control.