Mako Oda, who left her teaching job after getting married, is suddenly rehired as a temporary teacher due to a staff shortage at her local school. Known for her serious personality, Mako takes her husband's joking suggestion—"Since it's a boys' school, why not dress in something that'll make you popular with the students?"—to heart and boldly shows up in a tight bodycon dress. To her surprise, the students respond even more positively than expected, and she continues wearing the revealing outfit to school. The next morning, during a crowded train ride, someone's hand begins groping her body.