Within the Inner Palace of a certain kingdom lies the 'Inner Palace Opera Troupe,' a theatrical group composed entirely of female performers. Kayou enters the palace as an apprentice musician, dreaming of becoming their greatest prima donna. However, the 'Inner Palace' is a place swirling with envy and resentment. Before long, Kayou finds herself entangled in a dangerous incident... A story of Mystery, Romance, and Chinese-style Fantasy begins here!