Yuriko has gotten married and moved to a new house. However, her good-for-nothing ex-boyfriend, Kadohara, has tracked down her whereabouts and is coming to blackmail her... Not wanting her current life to be ruined, Yuriko has no choice but to do what he tells her to do. However, by chance, her neighbor, Kakinuma, finds out about this and chases Kadohara away. Yuriko is grateful, but now the brute Kakinuma has a hold on her weakness and plays with her mercilessly. Everything backfires for Yuriko. Her peaceful daily life is transformed into the humiliation of being her neighbor's sex toy...