Five young, ambitious cops try to succeed in their high-stakes careers in which the smallest mistake can have life-or-death consequences. At the core of the close-knit group is perfectionist Andy McNally, whose father was a cop. The series follows Andy and her four colleagues as they experience the trials, triumphs and tribulations of police work.

Chris and Andy face a tough decision while investigating a vicious beating; Sam and Luke get competitive during a retraining exercise.

15 Division starts a city-wide search for an abducted 9-year-old girl; disturbing evidence is uncovered during an interrogation.