Legend has it that after a person drowns in the water, he turns into a water ghost named "Forbidden Woman". It stands upright in the water and entangles everyone who dares to approach it. The beautiful girl Xiaodie (played by Zhang Lanyi) is about to hold a unique and terrifying engagement ceremony with her boyfriend Mo Fan (played by Ding Huiyu). But Xiaodie is not in a good mood. Because of a certain incident, she has been troubled by horrible hair one after another, so she is quite resistant to the engagement ceremony. And Mo Fan's nephew seemed to be possessed by a ghost, sending invitations to Aili (played by Yan Weier), Dazhi (played by Yao Yuxin), Ping'er (played by Du Qiao), Guangge (played by Zhong Chao), Mengmeng (played by Jiang Yuxi), Xiaolong (played by Li Jiayue) and others. In the swimming pool run by Guangge, the engagement ceremony is about to be held, and two or three friends who received the invitations come one after another. In the cold water, the breath of death spreads wantonly. What makes everyone especially frightened is that the invitation of Qingrou (played by Du Jing), a girl who died accidentally a year ago, also appeared in the swimming pool...