Sergi Vizcaino directs this horror starring Amaia Salamanca, Maxi Iglesias and Lucho Fernandez. A group of medical students are set the task of definitively proving or disproving the existence of the paranormal. Their assignment takes place in an abandoned mining town which was once home to an insane doctor who used to torture his patients in the disused mines. Although they are warned of the dangers that would come with tampering with anything in the town, their curiosity gets the better of them and they find themselves opening a portal to the afterlife. Will any of them get out alive?