《紧急呼叫》讲述的是：Haylee, a local EMT suffering from PTSD, spends her days making split second decisions with lives that hang in the balance. One night on a routine call, she is faced with a moral decision, taking matters into her own hands and mercy kills a young woman. Her decision opens a pandora's box that leads Haylee to blur the lines of her job responsibilities and wanting to help those in need. Now, falling deeper and deeper into a rabbit hole, she gets caught up in a world of underground drugs and a sadistic killer who's made her his next victim.