A young couple and a middle-aged bachelor who lives next door to them in an apartment building have a close relationship. The men share hobbies and go out together, while they also enjoy home-cooked meals and drinks with the wife. From the outside, it seems like a rare, warm neighborhood bond these days. However, the husband has another side—he is abusive. Stress from work or jealousy towards his wife leads him to violence. As the husband's abuse escalates, the wife can no longer bear it and seeks help from the middle-aged man next door. Though confused, he promises to protect her after hearing her story. The wife becomes drawn to this kind man and seeks a physical relationship, which he reciprocates with her voluptuous body. And then, the two of them…
