When Tatewaki Kuno, a poetic swordsman, invites Ranma and friends on a yacht trip, a storm unexpectedly strands them on a deserted island. Their focus shifts from repairing the boat to a more pressing issue – the vanishing of young girls within the group. These girls have been taken by Prince Toma of Togenkyo, a floating island where a magical spring instantly transforms all it touches into males. To save the kidnapped girls, including Ranma's betrothed Akane, and acquire the transformative water, Ranma must compete in a martial arts bridal competition with bizarre challenges like 'survival flower-arranging' and 'obstacle-course cooking.' Disguised as a girl, Ranma faces the daunting task of outwitting numerous captives, winning the contest, rescuing Akane, and obtaining the enchanted Togenkyo water – all while navigating the competition in a push-up bra and high heels.