Six adventure streamers enter the abandoned Saint Mary Welfare Home in Southeast Asia to livestream their exploration. It was once the site of the mysterious deaths of 37 teenagers. As strange incidents befall the team one after another, Zhao Lei dies after inhaling poisonous gas, Gao Fei is murdered by Su Qing, who is trying to resurrect her deceased husband, Su Qing dies in madness, and An Ya exhausts her life saving everyone. Team leader Chen Mo, unwilling to let anything stop him from livestreaming because he needs to repay his gambling debts, ultimately becomes trapped in the archive room with Lin Wei as poisonous gas fills the room. Lin Wei escapes with evidence her father collected while investigating the welfare home's forced gender reassignment surgeries on teenagers years earlier, only to discover that every name on the blackboard has been crossed out in red—and that she is still trapped in a loop.