The hot-blooded boy upstairs saw a beautiful but lonely woman living downstairs. Her husband, who worked as a security guard, was never at home day or night, and when he returned, he used her as a tool for sexual release. The boy, while spying on her, silently fell in love with this desolate woman. It was a strange plot twist that the woman never had direct contact with her husband during their sexual encounters. This drove the boy, who had accidentally obtained the key to the downstairs apartment, to finally give in to his urges and have relations with the woman, mimicking the actions of her husband. When the secret was revealed, the woman was finally moved by the boy's innocence and sincerity, and love flared up between them like a flame...