Lark Smith is planning a fairytale wedding when in the blink of an eye, everything she's dreamed of is suddenly gone. 5 years later, her goal of becoming a doctor is just within reach when, without warning, she's fired. Now, getting back on track means making a deal with the devil: renowned surgeon Lorenzo Santini, called "Dr Satan" behind his back. He'll use his influence to get her back in the program. But first, Lark has to pose as his significant other all summer at his sister's wedding. What Lark doesn't realize is she's already met Lorenzo's brother Dante, the firefighter who was there on Lark's worst day. The brothers couldn't be more different. Which is a problem, because the last thing Lark wants is to fall in love again...