In Núpur, a chef from Reykjavík is hired to throw a party in the middle of winter at a summer hotel and an old boarding school. All information is scarce, but he realizes when he arrives at Núpur that he is alone there, at least for the first time. The film is based on the stories and experiences of former students from the boarding school in Núpur. Everyone who has stayed at Núpur knows Númur, but Númur is a former student of the school who took his own life while staying there almost 100 years ago. Ever since then, he has had a habit of pranking those who stay at Núpur.