A husband who disappeared in front of Hisae and her son, Takefumi, leaving behind a large amount of debt. In order to pay for her living expenses, Hisae had to pretend to be a student and sell pants at a Brucella shop. One day, Takefumi needs a large sum of money to save for a school trip, and Hisae tries to raise the money by doing 10 times more work, but... But Sue didn't know yet. The harshness of the act of staining 10 times the amount of pants...