Stuck in the middle of a fight between Ranma and Ryoga, Akane's long hair is chopped off by Ryoga's bandana sword. Concerned for her, Ranma ditches the fight and tends to the dumbfounded Akane.
Akane and Ranma wind up both attending Furinkan High School. But at the school gates, all male members of the school sports clubs are lying in wait to attack.
Ranma and Akane are enjoying a parfait at the cafe when a beautiful young girl named Shampoo suddenly appears before them! Exclaiming "I kill Ranma!" she relentlessly chases him!
It turns out Ryoga is also a victim of Jusenkyo, turning into a baby pig every time he is splashed with cold water. Akane, who does not yet know this, vows to keep the piglet and let it sleep in her bed. When Ranma hears this...
Thanks to Shampoo's Shiatsu technique, Akane has completely forgotten about Ranma's very existence! In order to get Blend 119, which is needed to restore her memories, Shampoo issues an unbelievable condition!
Tatewaki Kuno, captain of the school Kendo club and in love with Akane Tendo, finds out that Ranma is Akane's fiancé. He relentlessly challenges Ranma to battle...