Following a horrible street accident on a rural wooded road near Mexico City, Agata goes into a coma, and her identical twin sister Catalina begins to experience the pain and terror that her comatose sister is going through.[3] Catalina must try to solve the mystery of her sister's accident next to the Km. 31 marker and discovers a local legend that tells of malignant spirits that prowl the road and who are said to prey on travellers.[4] Following a series of terrifying events, Catalina realizes that their link is growing stronger and that her sister is screaming for help from her unconscious state.[5] With the help of her Spanish boyfriend NuÃ±o, Agata's boyfriend Omar, and local detective Martin Ugalde, she discovers that Agata is trapped between life and death, between reality and a terrible netherworld of evil spirits and ancient legend.[6]
Where is the rural wooded road near?
Mexico City