Kyoko, the wife of her husband, a famous martial artist, is heartbroken after his sudden death. Running the dojo alone is difficult, so she tells her students she is taking time off... Having been subjected to horrible corporal punishment in the name of "pampering" them while he was alive, they are at a loss as they no longer have a target for their anger. However, at the suggestion of Sasaki, the head student, they plan to use Kyoko's body to get revenge for all the grudges they have harbored. Without knowing anything about the situation, Kyoko welcomes her students into her home...