The Great War of the Flying Saucers

Theatrical feature. Considered the pilot/prototype for the UFO Robot Grendizer TV series. Duke Freed is an alien who has escaped to Earth after his home planet was invaded by the armies of Great King Yarban. Five years have passed and now Yarban's daughter, Princess Teronna, is on a mission to find both Duke and his spaceship Grendizer by invading our planet with their fleet of flying saucers.