Martial arts champion Clara Sutton transmigrates as an 'evil girl' facing debt. Her stepfather finds a sickly man as her matrilocal husband, Seventh Prince Aidan Quinn. Aidan secretly commands troops as a 'Green Tea Schemer' husband. When Prince De's rebel army arrives, the husband transforms into a god of slaughter, and Clara wields a battle-axe. They quell the rebellion, beginning a romance between a female overlord and a ruthless emperor-to-be.