Queen Valia of Dreamland has passed away, and her will revealed that Yuko Ahso, the Warrior of Valis, is actually one of her twin daughters. Moved by the knowledge of her true identity and the loss of her mother, Yuko sets out to restore peace to Dreamland forever.

Cheats:
At the title screen, enter the codes below:
Level Select Holding up, A, B, C press Start and release all buttons
Visual select Holding up-left, A and C press Start