On the verge of graduation, female student Nao finds herself torn between college and employment—until she makes a bold decision. To fulfill her dream, she resolves to become a full-fledged dominatrix. To begin her journey, she invites a male classmate to her home, letting him believe he'll be the one indulging in dirty pleasures. But Nao's true intention is far different: she plans to use him as her practice subject, a mere tool to achieve her ambitions. Soon after, her homeroom teacher—summoned under the guise of career counseling—meets the same fate, becoming another pawn in her training. Through these two men, Nao systematically advances toward her dream. Both classmate and teacher, drawn into her commanding presence, gradually awaken to a unique thrill. As their submission deepens, they become aware of their own masochistic desires, ultimately plunging into the depths of obsession.