Marius Grey hunts monsters. He's not supposed to. He's only twelve and his job as a cemetery boy is to look after the ghosts in his family's graveyard. He should be tending these ghosts and - of course - going to school to learn how to live between worlds without getting into trouble.

But, Marius has an expensive goal. He wants to bring his mother back from the dead, and that takes a LOT of mystic coins, which means a LOT of monster hunting, and time is running out.

If he wants her back, Marius is going to have to go after bigger and meaner monsters, decide if a certain flesh-eating mermaid is a friend or foe, and avoid meddling demons and teachers along the way. Can Marius navigate New Orleans's gritty monster bounty-hunting market, or will he have to say goodbye to his mother forever?