Halloween is a mysterious holiday where people using frightening costumes try to scare each other and have fun. Jacopo and his dark-skinned friend Duke spent this night together. There was a lot of alcohol and a light narcotic potion. Then the guys were in Lenka’s apartment. A girl from the Czech Republic, she is a member of the Erasmus program, which involves an exchange of students. Lenka’s apartment is rented with an English friend Elizabeth. Then, as described in the movie "Ballad of Blood", there was a night full of sexual joys. Jacopo was with Lenka, and Duke made love to Elizabeth.
In the morning, everyone remembered little of what happened the day before. When Duke went to the toilet, he cut his foot on the glass. Shattered fragments of it were throughout the apartment. After some time, the guys found a naked Englishwoman on a glass roof. When they wanted to get her, Elizabeth fell inside. The girl was already dead for several hours. In order to understand what happened, everyone began to study the calls that were recorded on the deceased's mobile phone. Later came the nightmare memories of the previous day.