Drama series about the work of police, paramedics and firefighters in New York City during the "third watch" hours from 3 PM to midnight. The paramedics include battle-weary Doc; headstrong and gregarious Kim; her partner Bobby; and rookie Carlos. Sully is a street-seasoned cop with a green partner, Ty Davis, in constant conflict with Sully's glory-hungry rival Bosco, and his long suffering partner Faith. Kim's ex-husband, firefighter Doherty, works the same shift at "Camelot" -- the firehouse and precinct on the corner of King and Arthur Boulevards.