Five unexpected triangular keys dragged Lin Mo and four friends into a desperate situation beyond cognition. The rules are cold and cruel: the key is the only certificate leading to the nine "magic doors". Behind the doors is a dream world built according to the sequence of Qimen Dunjia - the water of Ximen, the soil of Shengmen, the wood of Huamen... Each door is a cruel test for human weakness.
Here, the injury is truly painful, but there is no real death. The only tool is the key that turns into a mysterious mobile phone. The golden gravel of Shengmen measures the bottom line of greed, the sin tree colossus of Huamen gnaws the price of betrayal, and Dumen's time and space corridor freezes the moment of lies.
They soon discovered that this was no game. Supervisor Gu Yan seems to be guiding, but he is shackled; behind every door, there is a link to a deeper darkness and a bloody truth that has been covered up for a long time. The power of dreams begins to erode reality, and former comrades gradually alienate in pain and suspicion.
Become a prisoner of the rules, turned into dream nourishment in eternal torture? Or pry the cracks in the rules, even if the cost is to be shattered? When the road to the final "open door" opens, they must face the deepest sins in their hearts and make the ultimate decision - to uncover the shocking secrets behind this nine-fold puzzle that affect everyone's life and death.
This is a survival game played on the ruins of the soul, a dark fable written with crime and punishment.
