Tommy finds out his wife and kids are living in Ohio, so he joins his firehouse's barbershop quartet, who happen to be traveling there for a singing competition. Elsewhere, Mike flies off the handle after Theresa breaks up with him; and Lou tries to get Tommy transferred back to 62 Truck.

Lou faces heat from headquarters for using a derogatory term to insult Laura. Meanwhile, the guys try to convince her that name-calling is part of the job. Meanwhile, Tommy injures his hand when he has another dispute with a cop over a parking ticket; and Johnny Sr. wants to become a plus-size model after he learns that Uncle Teddy is making a fortune.