Hatsumi Saki awakens to her masochistic side. A beautiful female teacher is called in after a colleague finds out about her weakness. She is tied up so tightly that the rope leaves clear marks on her skin, and is unable to move. She is subjected to relentless hard deep throating, toy training with her legs spread apart, candle and rose whip play while on all fours, face stomping and choking in a brutal fuck... She sheds tears as she is subjected to the cruel rape play, vomits, and squirts a large amount of juice. Before she knows it, the pain has turned to pleasure, and she awakens as an obedient sex slave who seeks out pain...