Feature version of the Japanese anime series. Ranma is a young boy with an embarrassing problem - when he gets wet, he turns into a girl. When he goes on a pleasure cruise on Kuno's new luxury yacht, the trip ends in disaster when Ranma and the girls find themselves shipwrecked on the mysterious desert island of Togenkyo. Being stranded turns out to be the least of their worries though, as one by one the girls begin to disappear. The kidnapper is revealed to be Prince Toma, the ruler of the island and a man desperately seeking a suitable bride. Unsurprisingly, Toma is instantly attracted to Akane, Ranma's irascible girlfriend. But when Ranma sets out to rescue Akane, an unfortunate turn of events and an inevitable change of gender results in Ranma becoming a possible bride himself.