Ben faces his final day of probation and has to deal with Cooper's addiction to painkillers. Adams and Ochoa try to track down a sexual deviant who fled from his van following a pursuit and collision. Ochoa finds out that Adams has begun dating her son (Maurice Compte), a patrol officer 8 years her junior, making her question if she can continue to work with Adams. Sammy is assigned a new partner, Det. Gil Puente (Laz Alonso) and questions his future as a gang crime detective in the LAPD when a warrant is issued for Nate's killer. After seeing the birth of his son, Sammy asks Sal to transfer him to patrol so he can help train new officers. In the end, Sammy and Ben become partners.