Aliens are kidnapping the children of earth to use as frozen food. Kyung-ah and Hyung-cho use the Spirit Robots to go rescue them. Kyung-ah's team finds the children, Hun and Young-mi, who are toys for the alien princess. But the alien queen finds out and is furious. She ends up capturing Kyung-ah's team as well. At this, Prof. Min, Princess Aran, Yong, and Dung-bo recharge Lightening Dragon's energy and go to rescue the children.