A sadistic teacher forces students into brutal training and sadistic BDSM games. He repeatedly slaps their asses over their gym bloomers, then injects multiple enemas into their rectums. Students forced to run while holding it in are punished on the spot if they leak: "You've got no guts if you can't endure this!" They're bound with hands behind their backs, blindfolded, and whipped mercilessly. Those who endure through tears are hung upside down from the ceiling and flogged relentlessly—the sound of a whistle clenched in their mouth striking the ground with each blow intensifying the torment. Spread-eagled from the ceiling, they're tortured with glow sticks and have needles pierced into their ass and pussy. A pregnant student is summoned to the teacher's home and forced to urinate, then made to drink his urine as further degradation. With legs spread and restrained, vibrators are shoved into both her pussy and ass, tormenting both holes simultaneously. Dragged outside, students are given enemas and ordered, "Now run!" as the perverted teacher chases them down in his car. They're hogtied and lashed with whips embedded with needles. The next day, students are hung upside down from a power tower, subjected to candle wax and whip play. This cruel teacher's extreme, merciless games push his students to the brink.