When Kuno washes ashore at a beach with amnesia and a killer new technique, Ranma determines to find out what happened to him.

Ukyo Kuonji samples a taste of her secret sauce after a decade of fermentation, however she collapses in disgust. She is taken to the Tendo dojo for a recovery period. Due to Ranma being exceedingly affable to his childhood friend, Akane grows increasingly jealous, suspecting an ulterior motive.