Rua, who is called the defective saint, risks her life to save her beloved Garrot. However, her achievement is stolen by her best friend Arian, and the two become engaged. Having lost everything, Rua vows to take revenge on those who believed in her.

After being betrayed by Arian, the second prince, Sven, appears before Rua. Sven proposes revenge, and Rua learns of the shocking dark secrets of the temple.

In search of the cause of the magical beasts' attacks, Rua sneaks out of the room at night and finds suspicious figures.