What happens when Cerberus leaves the Underworld on a mission to play matchmaker? Poppy Goldburn's life is manageable, predictable, until a stray dog follows her home from work. Between caring for the dog and trying to find his owner, she feels a little overwhelmed. Especially when strange men approach her and the dog, calling him Cerberus, both claiming to be the dog's sole owner. Sorting out lies from the truth is harder than it seems, especially when the strangers seem to have ulterior motives. Of course, things only get more complicated when Poppy ends up in the Underworld, with Hades himself.