The beautiful and demure female teacher, Karen Ichinose, is forced into humiliating BDSM experiences after a hidden camera tape of her pissing is used to blackmail her. Normally gentle and kind, trusted by her students, she secretly undergoes special lessons that introduce her untrained anus to the pleasures of anal penetration. This shocking production reveals the hidden, darker side of a teacher, completely unknown to her students, as pleasure and shame intertwine in intense anal experiences.