Reiko Fujimori, 28, is a devoted teacher who cares deeply about her students. When she learns that her student Murai is working at a shady nightspot, she goes there to investigate. The supposedly members-only bar is actually a place where women are secretly trained and displayed for customers. Unaware of the truth, Reiko accepts a drink from the owner, Daigo. Once she becomes dazed and disoriented, he subjects her to anal training.