An illegally parked car delays the firefighters, causing a woman's death. Western medicine kills Doc and Carlos' Chinese patient.The suicide of his first partner causes Sully to reflect on his own life.
Candyman risks his life for Davis. Matty hides from the police. Bobby and Kim get closer. Carlos is upset about Doc'srelationship with Morales. Yokas is enraged by Bosco's treatment of a wounded thief.
A gunman is targeting gays, prompting a vigilante response from the community who feels the police aren't doing enough. Faith arrests her husband for drunk driving, Ty tries to help a young man whose sister he arrested, Carlos gets involved with a pretty patient, and Bobby and Kim deal with the fallout from their night together.
Police mount a massive search when a toddler disappears from the scene of a traffic accident. Violence follows Sully's encounterwith his former priest. Carlos is going to be a father, and Doc is disgusted. Morales and Doc plan their next move.
Bobby saves a carjacker trapped inside a burning auto. Vangie complains to Carlos' superiors. Davis inadvertently foils aninvestigation of Candyman for corruption. Bobby hears that Matty is panhandling.
After being severely shot in the season finale, firefighter Doherty fights pain and fear when he returns to the station a bit prematurely for a full day of emergencies, but he can't admit to himself that his physical weakness prevents him from peak performance -- and his stubborn pride just might get himself and other fire personnel killed. Meanwhile, a reserved female firefighter (guest star Amy Carlson) transfers in under a cloud of suspicion after she previously charged a popular fireman with sexual harassment.