Ten young Japanese women awaken to find themselves trapped in a bizarre, subterranean dining room. Seated around a massive glass-topped table, each is bound to her chair by iron restraints. Above them, a chandelier flickers ominously, casting long, claustrophobic shadows. A high-tech video monitor and a hidden microphone dominate the grim space. None of the captives remember how they arrived, only that they were brought together by a shared connection: they are all classmates, friends, or acquaintances of Mami, a cheerful student who recently vanished under mysterious circumstances.Panic quickly gives way to suspicion. As the captives struggle against their bonds, a cryptic voice broadcasts from the monitor, turning the dinner party into a deadly psychological game. The rules are brutally simple: one by one, a captive must be voted out and sacrificed. With each disappearance, a terrifying trap activates, dragging a screaming woman into the darkness below.Motivated by sheer self-preservation, the remaining women begin turning on one another. Secrets, betrayals, and deep-seated resentments are violently dragged into the light. Friendships shatter as desperate accusations fly across the table. Some desperately search for loopholes in the captor's twisted logic, while others resort to cruel manipulation to secure their own survival. Flashbacks gradually reveal the grim truth about their past—most notably, how their collective cruelty, bullying, and indifference directly contributed to Mami’s disappearance and apparent demise. The dining room becomes a literal chamber of karmic retribution, where their past sins manifest as physical torture.As the body count rises and the group shrinks, the atmosphere grows suffocatingly tense. Paranoia reaches a fever pitch when the survivors realize that their captivity might not be random vengeance orchestrated by an outside party, but rather a meticulously planned execution driven by a much darker,
personal vendetta.In the shocking final twists, the overarching mystery unravels to reveal that Mami herself—or someone intimately connected to her tragic fate—is orchestrating the nightmarish ordeal from behind the scenes. The remaining women discover that their escape is entirely an illusion. In a chilling denouement, the horrific reality of their actions catches up to them, proving that the
psychological torture chamber was designed not just to punish them, but to make them relive the exact agony they inflicted upon the innocent girl they once cast aside.