Reiko Kobayakawa joins a hot spring trip organized for neighborhood association board members in place of her husband, who cannot attend due to work. Though uneasy about the presence of several lecherous older men, she feels safe knowing her neighbor Mrs. Kobayashi is accompanying her. She manages to get through the first part of the banquet unscathed, but when Mrs. Kobayashi's husband suddenly develops a high fever and she has to return home, Reiko is left alone and forced to drink heavily by the remaining men. While trying to sober up at the inn's bar, board member Kawamura suddenly appears, setting off a new chain of events.