At four-six o'clock, a mother-in-law invites her daughter-in-law, Dekachi po, who is too eager for her.

She is a mother who lives with her daughter and wife and spends happy days. However, the loss of his underwear caused him to witness Okazu's raging daughter-in-law. It seems that it is caused by sexlessness between couples. A sympathy for his useless decatchi, he seduced furiously with the words "I'll help you instead of my daughter." Even though she knows that she is the wife's mother, the ferociousness that can not suppress her excitement in her state of contempt exposes Decatchi yippo who has risen to a gutter and exposed it to her.