At work, L.A. Deputy Chief Brenda Johnson is a woman in charge. Got a suspect to grill, a case to crack, a murderer about to walk? Call Brenda in and watch the fireworks. But at home, well, that's another story. Join the squad as Sanchez looks after an orphaned boy, Tao goes undercover as a biker dude, Provenza and Flynn date airline attendants (turns out one of them has a corpse in her bathtub), and Brenda finds her family Christmas rudely interrupted by crime.