"Five years ago, on a blood moon night, Ruth, a hotel maid, stumbled into the room of Arthur, the Vampire King. Bound by the pull of soulmates, they shared one night, and Ruth fled the next morning. Now, Ruth is a desperate single mother whose half-vampire son, Leo, suffers from a rare ""photophobia"" illness that requires a fortune to treat. When a chance encounter brings her to Arthur's castle for a high-paying job, he instantly recognizes his mate. Furious at her disappearance, he coldly torments her, but she endures it all for her son's life. When Ruth's greedy aunt sells Leo to the extreme ""Exorcism Courtyard,"" Arthur, sensing his bloodline in danger, arrives just in time to witness Ruth shielding their son with her own body....