When officers John Cooper, Ben Sherman and Chickie Brown rescue a baby girl found crawling across the middle of an L.A. intersection, the hunt for her mother begins. Detective Lydia Adams finds herself affected by the search, taking a personal interest in reuniting the baby with her mother. Officers Sammy Bryant and Nate Moretta are unable to find the financial resources to put a juvenile witness in police protection after an attempt on her life and must now convince the district attorney to place her in a student police program. And back at the station, everyone gathers for a retirement party for Dewey (guest star C. Thomas Howell).