Ranma ½: Kessen Tougenkyou! Hanayome wo Torimodose!

Ranma and the gang are invited to a boating trip by Kunou. Unfortunately, a storm destroys the yacht and everyone is stranded on a remote island.

The whole situation goes even more awry when one by one, the girls disappear without a trace.

Ranma then finds out that the girls are abducted by Toma, ruler of the island, as part of his personal harem.