Shizuku Futaba is a pure-hearted young actress with extraordinary large breasts, dreaming of making it big on stage. Unaware of the harsh realities of the world, she moves to Tokyo and attends an audition where the theater company's director offers her a special condition—in exchange for her body. She reluctantly agrees. Her rehearsals become a daily ordeal of sexual harassment: practicing diction with blowjobs, learning diaphragmatic breathing through titty fucks, and enduring breast fondling during stretching exercises. Eventually winning the lead role, Shizuku is forced into real sex scenes and repeatedly creampie fucked by the male cast members. The dark, seedy underbelly of the entertainment industry slowly consumes the innocent heart of this young girl.