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.

The Kyurangers are reunited again and they set out for the Crux System to confront Don Armage. On the way there, they decide to infiltrate a competition held by Hoshi Minato, known as the greatest artist in the universe, to learn about his possible connection with Jark Matter.