My older brother asked me to help my family, so I decided to train my mother and daughter all together to have her do with her creampie and make her submit.

Miyu and her daughter Ai are left behind when her husband passes away due to illness. It was his brother-in-law Yuji who reached out to the two of them to help them. Yuji was asked by his older brother, who had only a few more lives to live, to take care of the two. Yuji, who has always loved Miyu, reluctantly agrees, and the three of them begin their lives, Miyu and her husband, Ai, who is on a business trip alone. However, as the three of them live each day, Yuji's hidden feelings and sexual desires go wild as he is forced to do so by his older brother. And the two face days of humiliation that they are not allowed to resist...