At first, only a small core group take the challenge. Sanae (Tokunaga) is worried that her widowed father will lose his job, and the ability to support the four kids. She convinces her lifelong best friend Kimiko (Aoi) to join her at the disastrous first meeting. After the rumor runs through attendees that they will be dancing topless, Sanae and Kimiko seem to be the only two listening to the assurances that the rumor is false, as dozens of their companions flee. The two girls are joined by Hatsuko (Ikezu), the organizer's secretary, and Sayuri (Yamazaki), a large clumsy girl.