Ranma is determined to infiltrate the Furinkan High girl's locker room when he gets a map from Ryoga that shows there's a old spring beneath it that can cure his curse. It proves harder than Ranma thought though, since the girls are on high alert due to the recent raids by Happosai.

Happosai has claimed one of the urns to store his 'collection', but Ranma manages to steal it back. Of course, the master takes this as a personal insult, and starts causing considerable trouble for Ranma and the others as they travel up the mountains to find the place that will activate the urns.