Austin (Emile Hirsch) and his father Tommy (Brian Cox) are both coroners in the town. One night, detective Sheldon (Michael McElhatton) delivered an unknown female corpse, hoping that Tommy and Austin could figure out the secrets of her body before dawn. Strangely, there were no bruises or wounds on the female corpse, but her internal organs and bones were scarred, and it was obvious that she had been cruelly abused before her death. During the autopsy process, more and more mysteries that were difficult to explain scientifically challenged Tommy's rich experience and curiosity, and the sudden heavy rain outside the house also brought a touch of gloomy atmosphere to this extraordinary night. The strange figures, the footsteps that came and went, and the terrifying scene that seemed real and illusory, soon, the father and son discovered that the most important thing they had to do was not to solve the mystery of the female corpse, but to escape from her as soon as possible, the farther the better.