Katarina is shocked by the death of her half-sister. Sarah was vacationing at the Diamond Coast Hotel, and shortly after returning, unexpectedly committed suicide. His mother Mia, heartbroken, asked him to go to this hotel and try to find out what happened to Sarah there and pushed her to a terrible decision… Katarina checked into the Diamond Coast, where everything seemed perfect. But the oddities were not long in coming. Soon the girl saw a ghostly woman in an evening dress in the hallway, then discovered that a completely different person lived in her room. She began to understand that the hotel is a frightening place, it is impossible to just leave it, the evil that has settled inside will haunt you everywhere…