Genma and Ranma head to the beach for some summer training, but Genma disappears for a week. Ranma finally finds him living it up in a big mansion by the sea. Ranma discovers that Genma has been adopted by a boy named Yotaro who has always wanted a pet panda. The boy has named him Kumahatchi and Genma seems to be enjoying his new life of leisure. Ranma gets fed up and ends up carrying Genma all the way home. Yotaro pursues them to the Tendo Dojo and falls asleep.