A seven-day survival game suddenly appears in the modern urban background. Each day corresponds to a different life and death level, and the flow of time is different from the outside world.
The main scene is a "mirror theater", the internal space is foldable, and each stage has hidden secrets. The theater is shrouded in eternal night and there is no way to escape.
There are seven human tests corresponding to the seven deadly sins. Participants must face the deepest sins in their hearts in order to survive. The mysterious organization "Masked Parliament" controls everything behind the scenes.
Intention: None