Young freelance photographer Thun (Ananda Everingham) and his girlfriend Jane (Natthaweeranuch Thongmee) were driving home after a party with their university classmates. On the way, Jane knocked down a woman who came by unexpectedly. Jane wanted to get out of the car to check the woman's injuries, but was dissuaded by Thun. The two hurriedly fled the scene of the accident. Jane began to be restless all day and accused Thun of being cold-blooded. Thun just told her to relax and not worry too much. Jane's worries were not redundant. A series of strange things happened to them one after another: a blurry female figure appeared in many of Thun's photos, her neck suddenly hurt, and the classmates who had the party that day jumped off the building and died one after another... The two suddenly fell into a terrifying atmosphere in the darkroom many times. In order to get rid of the nightmare, Jane decided to conduct an in-depth investigation, and the tragic experience of a woman related to Thun slowly surfaced.