Three sisters—Haruka, Mari, and Natsumi—work as door-to-door saleswomen for premium futons. The two elder sisters, Haruka and Mari, are diligent and hardworking, but their sales figures remain disappointing. Noticing their struggle, the youngest sister, Natsumi, who has been performing well, secretly shares her personal sales technique. Following her advice, Haruka and Mari adopt a bold, aggressive sales approach that emphasizes their voluptuous, well-endowed figures, resulting in an immediate surge in sales. Fueled by their newfound success, the trio's ambition soars as they set their sights on visiting the homes of wealthy clients.