In a world where only Pokémon exist, one Hikozaru desires to join the Pukurin Guild, a big location where Exploration Teams congregate and operate. Infuriated by the seeming power of the guild members and the guild's security, Hikozaru flees, tripping over an unconscious Pochama in the process. The Pochama awakens and is taken aback by both a talking Hikozaru and his own appearance—because Pochama is aware that he is in fact a human! With Pochama having no memories other than being human (and endless inquiries regarding his new body), Hikozaru proposes he seek assistance from the chief of the Pukurin Guild. While Guildmaster Pukurin may not know the solutions to Pochama's metamorphosis, he resolves to make Pochama and others.