Omega orphan Haiyi was married off to Beta Thomas at 18. Blamed for barren years, she suffered brutal abuse. When the council threatened exile, Thomas drugged her on a full moon night and abandoned her in a remote castle — planning to have rogues breed her by force. The castle hides Wolf King Gareth, who goes feral every full moon from Wolfsbane poisoning. In beast form, he catches her heat pheromones and claims her, forging an unbreakable fated mate bond. Gareth tracks her scent, executes pack justice on Thomas, and installs her as his personal maid. She strikes a deal: she guards his secret and soothes his feral episodes; he shields her from harm. No forced intimacy. Surviving jealous maids and noble fiancée Cecilia's schemes, Haiyi pulls him back from madness each full moon. Dangerous nights spark an undeniable attachment.