Episode 1: A new planet has entered the solar system and is on a collision course with Earth. Flash and Dale are held at gunpoint by Dr. Hans Zarkov, and forced into his rocket ship, where they travel to Mongo. Ming the Merciless forces Flash to fight his Monkey Men in the arena, but Princess Aura falls for Flash, and rescues him. The Lion Men attack Ming's palace in their Space Gyros. Flash befriends Prince Thun, and they stop Ming's wedding to Dale.