Sapphire was born with both boy and girl hearts but was raised as a prince. Now she must protect her secret from being revealed by the wicked Duke Duralumon.
EPISODE 1
Princess Knight
Sapphire, the daughter of the King and Queen of Silverland is raised as a prince to keep evil Duke Duralumon from inheriting the throne.
EPISODE 2
The Arrival of Satan
Duke Duralumon helps Satan capture Sapphire; Satan makes his daughter a powerful witch with Sapphire's powers.
EPISODE 3
The Contest of Strength
The annual tournament to determine the strongest knight has arrived, and Duke Duralumon seizes the opportunity to try to do away with Princess Knight.
EPISODE 4
The Phantom Ship
Princess Knight meets Prince Frank at a party on a galley ship, but Choppy learns that the rowers are Duralumon's slaves.
EPISODE 5
The Magic Herb
The queen touches a rose that was poisoned by Nylon, and Sapphire must fight monsters to get the antidote.
EPISODE 6
The Children and the Giant
Choppy discovers a little pixie seeking a way home.
Yoshiko Ohta
Noriko Shindou
Chie Kitagawa
Goro Naya
Kyoji Kobayashi
Masashi Amenomori
Takako Sasuga
Osamu Tezuka
Masami Hata
Tadami Watanabe
