Shunko, a mother worried about her son who refuses to go to school and stays cooped up at home. However, her son pays no heed to his mother's concerns and instead subjects her to brutal violence. The son seems to have a peculiar fetish, with an obsession for buttocks. Despite resisting, Shunko is coerced into exposing her lower body to her son. Her humiliation doesn't stop there; mercilessly, the son orders her to display herself to others as well.
