It cost a lot of money to operate on Katsuhiko, the only son of Susumu and Yui. Depending on the conditions, a wealthy man named Sonoda will pay the full cost of Katsuhiko's surgery, so Susumu and Yui go to see Sonoda directly with the thought of clinging to the straw. Sonoda has imposed a ridiculous condition on the two, "I want to hire Yui as a meat urinal for a year." Susumu strongly opposed it, but he lost the strong desire to help Katsuhiko and signed the contract.