Sapphire, the daughter of the King and Queen of Silverland is raised as a prince to keep evil Duke Duralumon from inheriting the throne.

Duke Duralumon helps Satan capture Sapphire; Satan makes his daughter a powerful witch with Sapphire's powers.

The annual tournament to determine the strongest knight has arrived, and Duke Duralumon seizes the opportunity to try to do away with Princess Knight.

Princess Knight meets Prince Frank at a party on a galley ship, but Choppy learns that the rowers are Duralumon's slaves.

The queen touches a rose that was poisoned by Nylon, and Sapphire must fight monsters to get the antidote.

Choppy discovers a little pixie seeking a way home.