Eleven Cool Treasures have successively completed their missions, and now it's the team leader Western Europe Rabbit's turn to take the stage. She is responsible for assembling the spacecraft. Western Europe Rabbit is deeply afraid of losing her leadership authority, so she racks her brains to invent various magical tools and potions to control everyone. Mischief Cat seizes upon Western Europe Rabbit's weakness, turning her own schemes against her by spreading rumors that cause the Cool Treasures to lose confidence in Western Europe Rabbit. The Cool Treasure team is on the verge of collapse. Recognizing her mistakes, Western Europe Rabbit takes full responsibility and uses her sincerity to win everyone over, strengthening the bonds among the Cool Treasures. In the end, she successfully completes the assembly of the Sky-Soaring spacecraft, setting sail once again to return to the universe and head toward the long-awaited Planet X.