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.

Sentaro Daimonji shows up fearing for his life, wanting Ranma and Akane to help rescue his kidnapped matriarchal grandmother. It is reviewed that the martial arts tea ceremony was practiced by two opposing schools. The three enter the rivaled school to find the Daimonji matriarch. Sentaro meets Satsuki Miyakoji, successor of the rivaled school, and becomes betrothed to her, joining the two schools together.