After her homeland of Persiev was attacked by Daiseal, an emerging nation that had teamed up with her uncle, Ceres defected to the great nation of Tong with her brother. The older brother, who vows to rebuild the country, travels to the palace to join hands with Tong, but the emperor, who is obsessed with women, does not even want to meet him. So Ceres infiltrates the inner palace and seizes the emperor. Ceres, who had made up her mind to infiltrate the palace, got lost and was found by Keisei, a prince who had a reputation for being intelligent and capable, unlike the emperor. Celes discovers his purpose and is subjected to lewd interrogation...?