Being the lord of dark, terrifying things makes Hades the most feared god in existence. He's also the most bored. When the guardians request his assistance, he is quick to grant it and make his way to the human realm. After all, creating havoc is what he does best. When his path crosses with a beautiful female, he finds her honesty refreshing, making his desire burn hotter. It's when she summons him for a favor that he will finally get to name his terms.

When tall, dark and oh-so-sexy walks into her store, Mia suddenly finds herself marked by a god. Saddled with a curse that rips her world apart on a nightly basis, she decides bargaining with Hades to remove it might prove beneficial. Of course, requesting a favor from the lord of the Underworld comes with a huge price. Namely thirty days in Hell as his guest.

Hades is only out for some fun, but Mia isn't playing his games. She intends to get through her agreement despite the yearning she feels for him. Problem is, the longer they are together the more she begins to see beyond the lord of evil to the troubled man beneath. Now she must decide if he is worthy of the only thing she has left to give.