On Ranma's first day at Furinkan High School, a group of boys — including the sophomore Kuno — ambushes Akane at the school's entrance.

A mysterious martial artist arrives at Furinkan High looking to settle a score with Ranma. Later, the school becomes a battlefield.

P-chan goes missing and shows up in the arms of a famous martial skater, who refuses to return him. Enraged, Akane challenges Azusa to a battle.