One day after work, our protagonist returns home earlier than usual and finds his mother-in-law naked while she does housework. He becomes mesmerized by her mature nude figure and discovers that she often walks around without clothes during the day when he isn't there. His wife doesn't seem to mind; in fact, she finds her mother's nudity irresistible too. Unable to resist any longer, our hero decides to act on his desires... *Note: Content may vary depending on distribution method.