Twenty-three-year-old CEO Don Francisco wants one of the richest women in the world dead. Which one? Daphne actress, model, heir to the Oakland financial empire, and unbeknownst to the general public, talented demon summoner. But since Francisco isn’t nearly as rich as the established Oakland family, he hires the only assassin he can Sebastián Monterey, a down-on-his-luck, struggling demon summoner, the cheapest and lowest ranking one there is. But Monterey is nothing like Cisco expected. He’s high-spirited, reckless, relentlessly cheerful …and worse, he’s a bit of a slut. The CEO is horrified to find out that Monterey has not just one, but seven angry exes in the killing business, who will stop at nothing to get in the way of an already impossible hit. Not only do they have personal reasons for wanting to see their former lover dead, they also have professional they are all currently employed by the Oakland family members! But Daphne is too powerful for Rey to take on alone...and she's about to become even more unstoppable, by seeking out a contract with the strongest demon that has ever lived. If Rey is to carry out his hit, and keep all of Larkhaven from being destroyed, he must convince his exes to work with him. Can he do it or will his failed relationships doom all of Larkhaven?