Tajel Pierce loves the thrill of being a paramedic. Every call she goes on gives her a rush. She makes no time for a personal life. No one can ruin her love for her career. Then there is Arianna Castaldi, who just transferred to her new paramedic position in a whole new state. All she needs is a new start without any distractions. Arianna and Tajel's relationship doesn't start off perfect. Embarrassed of the one night stand Arianna believes she had with Tajel, she wants to pretend they never met and make their relationship strictly business. The only choice they have to keep from strangling each other is to go from denying their feelings to accepting them as they work through intense 911 calls.