With Stinger and Champ looking for Scorpio and Kotaro temporarily absent for training, the other Kyurangers' next mission is to rescue the people imprisoned at the Space Dragon Palace Castle. Garu, who is upset because he has not been chosen for deployment lately, has his wish granted when the Kyulette selects him to join the Palace's infiltration team.

Stinger and Champ are eager to settle their scores with Scorpio, but he approaches Stinger instead and tells him that he is working inside Jark Matter to kill Don Armage instead. Stinger agrees to listen to him, unaware of his true intentions.