Police officers and paramedics rush between emergencies as each unit breaks in a new recruit: Ty, a rookie cop following in his father's footsteps, and Carlos, a former foster kid working toward medical school.

Jerry survives surgery but remains comatose. Doherty gives ex-wife Kim a bulletproof vest. Doc and Carlos must rescue a man after an explosion. Bosco captures Jerry's attacker without firing a shot.

After Bosco has sex in his squad car with the boss' daughter, his boss gets a videotape of it. Bobby and Kim argue heatedly. Doc brings Carlos along on a personal mission to locate the owner of a lost watch.

Rookies Carlos and Davis experience disillusionment with their new jobs and their training officers. Bosco struggles with homophobia. A teenage junkie destroys Kim's faith in humanity, but Bobby restores it.

Mercy Hospital's new doctor reprimands Yokas, Bobby and Kim. Yokas acts like a vigilante to punish a gang leader. Jerry decides not to return to work.

Bobby visits his older brother in prison and tries to express his feelings to Kim. Davis and Sully's working relationship improves, but Doc and Carlos get into a fistfight. Yokas tells Bosco not to lie for her.