For long-time Durango Fire Department EMT, Ava 'Blue' Navarro, her teammates at Station 3 represent a family more loyal than her own. However, when patients start dying on her watch, she draws the attention of local law enforcement. In particular the smooth-talking detective she's successfully evaded for years, fearing he might stir up her quiet existence. Detective Tony Ramirez considers himself a likable guy, which is why the perpetual cold shoulder from the athletic blonde first responder is confusing. Now he finds himself in charge of a murder investigation that threatens to shake his world both personally and professionally. A situation that won't earn him any brownie points. When medical examiner, Calder Stonewall, is called in to assist, it only seems to throw more suspicion Blue's way, and Tony has to pull out all the stops to prove her innocence while securing her heart.