When Salvador and Olivia entered the hotel, Olivia remembered a story that her grandmother had told her. One of them was about strange creatures that had been seen inside that place and that no one knew what they were. 

Salvador got scared when he heard the story, but he went into the place with Olivia anyway. In the distance, in a hallway, sunlight could be seen passing through the window, and at that moment, a mysterious and strange shadow was seen crossing quickly....