Sigga, an Icelandic artist, is performing abroad at a high end party. Afterwards she goes to the hotel bar and runs into an Icelandic flight crew there on a stopover. Sigga decides to party with them with unforeseen consequences.

The eighteen-year-old Lilja visits Áróra and Grímur, her estranged grandparents, in the city as she undergoes auditions for an international art performance group. When her father, Magnús and his younger sister Vala, two of Áróra's and Grimur's four children, find out about Lilja’s stay in the family house, a sense of panic arises. When the family gathers in the home to celebrate Lilja’s acceptance into the art group, a dark secret emerges, and soon a seemingly normal family celebration turns into a horrifying tragedy that nobody could have foreseen.

Áramótaskaup: 2015 is an annual Icelandic TV movie satirizing the events of the year.