Bai Bai, a young girl suffering from depression, came to Thailand with a group of college classmates, planning to start a secret room escape club in an abandoned mental hospital. However, everything became weird when Bai Bai saw a woman hanging herself on the roof. Ghost dolls falling from the sky, the resurrection of the hanged dolls, the mysterious disappearance of teammates, and the dean of the mental hospital possessing her best friend. One after another bizarre events continued to emerge around them. The series of events that Bai Bai experienced during her stay in Thailand aggravated her depression, and Bai Bai's condition was critical. After returning to China, Bai Bai sought the help of doctor Han Mu Shan. In the operating room of the hospital, Dr. Han helped Bai Bai recall everything...