After being complicit in a costume joke that ends in a fatal accident and a pact of silence, a group of young people will be threatened by an anonymous writer who wants to reveal his dark secret. Their stalker threatens to post a bloody horror novel based on them on social media. Each chapter one of them will die. While distrusting each other, the group will begin a fight for survival in the middle of the university campus. Any one of them could be the next victim, or the killer.

　　The movie is based on the suspense short film nominated for the Golden Méliès to the Best European Fantastic Short Film, winner of more than 30 awards and screened by more than 200 film festivals. It was defined by the critics as "a cult short film".

　　Two detectives are called to a small mining town in the Asturian mountains where a young woman who had been left for dead for months has suddenly appeared, leaving the detectives to question what dark forces are at work.

　　A young pregnant woman named Nada escapes from a country at war by hiding in a maritime container aboard a cargo ship. After a violent storm, Nada then gives birth to the child while lost at sea, where she must fight to survive.