Ism pits multiple servants against a brutal and grueling endurance test, unleashing merciless, devilish torment upon them. Those who fail are shaved bald or treated like pitiful prisoners. One after another, cruel punishments rain down—face sitting, repeated slaps, Japanese whip strikes, biting, kicking, hair-pulling choking, forced haircutting—and the list goes on. The sheer intensity drags viewers into a whirlpool of trembling excitement and arousal.