Ranma Saotome, a martial artist, returns to Japan after training in China with his father Genma. A freak accident has altered their bodies; Ranma turns into a girl when exposed to water, and Genma transforms into a giant panda. Ranma is then betrothed to Akane Tendou, the youngest daughter of Soun Tendou, who runs the Tendou Martial Arts School. Akane is initially opposed to the arrangement, and Ranma must navigate his new life at the school, dealing with friends and rivals who have strong opinions about their engagement.