The story tells the story of a college student Chunyu and others being involved in a game called "19th Floor" that they can't get rid of. Chunyu, a college student who has been estranged from her father since childhood, is involved in a game called "19th Floor" that she can't get rid of. In the game, Chunyu met Gao Xuan, who is smart and calm, Doudou, who has a strong force, and Yang Bawan, who is funny. She and her friends experienced the "ghost building" full of shadow puppets, the deserted village chased by leather figurines, and other levels. Because of the failure to pass the level at different stages of the game, her friends fell into a coma in reality. Under the crisis, Chunyu decided to find out the reason why they entered the game and the conspiracy behind the game. In the intersection of the game world and real life, everyone learned love and respect, and realized the meaning of life from adversity. Everyone used their own way to reconcile with the predicament, to understand their parents, and to accept themselves. Finally, through the intervention of the public security, these young people uncovered the conspiracy behind the "19th Floor" game. Chunyu also finally reconciled with her father and walked out of the shadow of the past. The play is adapted from Cai Jun's novel "The 19th Floor of Hell".