When Rylie, the son of a dragon shifter, goes missing, Lankdog and Jonski are called in by vampire matriarch Honoria to find him. Sorrel and his husband Darius take in a man with no memory who calls himself Rye. Slowly they come to realise they are all meant to be mates, but Rye fears he'll lose them on Halloween.  Lankdog and Jonski head to Japan, where the missing man's family is based, only to find the proud and stubborn father tried to bargain with a demon.  Can the demon's curse be broken? Or will it destroy them all?