Spirited medic Gabriela is strong and ambitious, fearless and passionate – qualities that serve her well at work but turn out to be stumbling blocks as she fights her growing attraction to Matthew.
The no-nonsense veteran paramedic of Station 51, Leslie is unwaveringly loyal and finds a male counterpart in best friend Kelly. Like him, she prefers to keep her romantic relationships on the casual side, but her philosophy on dating barely disguises the emotional scars left behind by her ex-girlfriend.
Descending from a multi-generational family of firefighters, Peter joins Station 51 immediately after their loss of a member. While he quickly endears himself to the team, he must work hard to prove himself and a difficult decision awaits him: to remain on Matthew’s truck, or train to ride alongside Kelly’s rescue squad.
The brash leader of Rescue Squad 3, Kelly battles many personal demons and has a tendency to land in hot water with his relationships. While his squad is his family, he hides from them the crushing spinal pain that is afflicting him – even his best friend and roommate, Leslie, is kept in the dark.
Matthew是81號消防車的隊長，個性強悍又務實，充滿經驗，與Kelly Severid之間的嫌隙，讓他處理罹難救火兄弟事件更加的棘手。他的私人生活也不順遂，他與未婚妻的關係開始出現問題， 因而在急救醫療同事Gabriela的身上找到慰藉。
The strong, pragmatic leader of Truck 81, Matthew’s efforts to deal with the death of one of their own is complicated by his rift with Kelly Severide. Things aren’t too rosy on the home front either when his relationship with his fiancée starts to unravel and he finds a confidant in paramedic Gabriela.