Two new recruits join the emergency services and work with older, wiser partners. Davis becomes a policeman, like his father, and Carlos a paramedic. Two other Paramedics, Bobby and Kim, find themselves rushing from emergency to emergency. Bosco and Yokas, the other police officers, and Jimmy and his fellow Fireman have their own crisis' to deal with.

Doc, Carlos, and Ty each feel guilty about the mistakes they made during Jerry's shooting; Jimmy gives Kim a bulletproof vest; the squads rescue a man dangling from the side of a skyscraper after an explosion; Fred wants Faith to quit her job; initially reluctant to discuss the circumstances surrounding Ty's father's death when Ty asks, Sully finally relents; Carlos and Ty commiserate about their partners; Sully's contacts on the street pinpoint an abandoned building as the location of Jerry's shooter, and Bosco takes the shooter down -- out a second floor window.

The two rookies, Carlos and Davis, experience disillusionment with their new jobs, and their training officers. Bosco struggles with Homophobia and gets himself involved in tit for tat games with Doherty.

Sully and Maggie reconnect; Bobby visits his brother Matty and tries to prepare him for his release from prison; Sunny asks Kim for a place to stay and runs away when Kim refers her to a shelter; Carlos hits a pedestrian with the bus; Faith and Bosco investigate a grave robbery and ponder immortality; Jimmy rescues a new recruit who is trapped under a collapsed ceiling in an apartment fire; Bobby takes Doc's advice and tells Kim how he feels, only to learn that Kim feels she isn't good enough for him; Sunny ODs and Bobby helps a saddened Kim find out her real name and hometown so that her parents can be notified; Sully's approach to ""problem solving"" goes horribly awry in a domestic dispute; Carlos and Doc come to blows over Doc's training methods, forcing Morales to break them up; Sully learns that Ty has good instincts, enabling them to save a teenage girl from a sexual predator.