The "Gravekeeper Saint" Mikias is hated by everyone. Dreaming of freedom, she spends her time saving up money in order to escape from the Saints' Palace which binds her. However, everything changes on the day she is suspected of assassinating another saint and the ruthless Prince Riddle proposes a "fake marriage" to achieve their mutual goals. "It's not sympathy or love. I have no intention of taking anything away from you." In order to be free, Mikias becomes his fake fiancé, but...