The closet in Dongwoo's room is a dimensional gate. The troublemakers from Uniland and special agents Cat and Ham, who are tasked with catching them, come through the dimensional gate. With Dongwoo's help, Cat and Ham gradually upgrade their abilities while apprehending the Bugpets. Meanwhile, the Bugpets hold a Lucky Ball tournament to gather their comrades scattered across various locations, but due to Dongwoo's actions, only Horned Mouse and Frogman manage to escape, failing to achieve their goal. Horned Mouse believes funds are needed to rebuild the organization, so he forms the [Black Rose Society] and attempts to steal valuable items, but always fails. Eventually, the Black Rose Society is also disbanded thanks to Dongwoo's efforts, and the Bugpet leader, Frogman, steps in himself. Frogman creates a new hideout in the house of Sayuri, Dongwoo's friend, and believes the only way to defeat Dongwoo is to find the strongest Unistone, [Crystal]. He makes every effort to find the Crystal, but is ultimately captured by Dongwoo. All captured Bugpets are sent back to Uniland via a transmission train, and Dongwoo, Cat, and Ham bid farewell with the hope of meeting again.