Mirei lived modestly on her husband's meager salary. One day, Mirei's neighbor Kita invites her to go horse racing, and she ends up riding. Her prediction about Kita came true, and Mirei, who trusted her completely, became obsessed with horse racing, even borrowing money from Kita. However, Kita had not bought any horse racing tickets, and she had made up a fictitious debt for Mirei, who knew nothing about her. He takes her male friends with him to settle her debts.