Shinobu Igarashi, a capable female company president, is suddenly kidnapped by a black man late one night near the end of her workday. Taken to a basement, she is bound from the ceiling, her body completely restrained, and forced into intense training. Despite her initial resistance, the overwhelming pleasure of the black man's giant cock rubbing powerfully against her wet, dripping pussy begins to consume her mind. Gradually, she forgets her position and pride as a CEO, her thoughts overtaken by the massive bazooka-like cock, transforming her into a fully submissive bitch who obeys without question.