Princess Knight

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

Duke Duralumon helps Satan capture Sapphire after she interferes with his new tax; Satan turns his daughter into a powerful witch with Sapphire's powers.

Duke sees Sapphire's participation in a Military Arts Contest as an opportunity to crush her, and hires Knight Baron to kill her.

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

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

Choppy discovers a tiny sprite in a shell, who says his father will grant three wishes upon his safe return; Sapphire and Choppy wind up on an island running from a giant.