Princess Nakaba of Senan is forced to marry Prince Caesar of the enemy country Belquat, tantamount to becoming a hostage. While Caesar is pleasing to the eye, he is also selfish and possessive, telling Nakaba outright, “You are my property.” With only her attendant Loki at her side, Nakaba must find a way to cope with her hostile surroundings, her fake marriage… and a mysterious power!