A stray cat becomes attached to Oga, causing Baby Beel to become extremely jealous and shock anyone he shows affection towards. Baby Beel challenges the cat to a fight and subsequently loses, but when a gang of fierce cats gang up on the cat for fighting in their territory, Baby Beel stands up for him, prompting Oga to help out. Afterward, Baby Beel and the cat become friends. Later, Oga takes Baby Beel and the cat to a play center where he once again meets Aoi in her park getup. While Baby Beel and Kota getting into heated competition with some other toddlers, Oga and Aoi have a conversation full of misunderstandings, both ending with explosive results. Afterward, the cat decides to leave in order to protect his fellow strays.