"Now, let the game begin—"

When they wake up, they find themselves in a room of despair, a private chamber of cold iron bars and a bottomless pit (hatch). Among the participants are men and women, including the beautiful Yui, who trembles in fear, her white shirt damp with sweat.

The confinement room where they are trapped is controlled by the latest AI, the "Confinement System." The Confinement System can perform any action on the men and women trapped in the room according to the Master's (user's) instructions. (Example) Drop [Name] Restrain [Name] Release [Name] Deploy hypnotic gas etc.

Using this Confinement System, the "Game Master" who gives cold instructions through the speakers... is you. In the end, who will you leave behind and who will you drop? You decide by giving various orders to the men and women. (Example) Introduce yourselves [Name], lick [Name]'s feet [Name], choose one man and [Action] etc.

The survivors throw away their pride, betray their comrades, and desperately suck up to the Master in response to his unreasonable orders. Whether they follow instructions or not, a Dead End (falling) awaits at the Master's whim.

Furthermore, as the game progresses, the "worst fifth person" is dragged out from the darkness in the back, and the terrifying catfight accelerates—.

Whether to save them or plunge them into ultimate despair, everything is at your fingertips. Experience the supreme situational thriller that satisfies a twisted desire for dominance right now. ...If you make the wrong choice, you will be the one falling...