An Icelandic couple live with their herd of sheep on a beautiful but remote farm. When they discover a mysterious newborn on their land, they decide to keep it and raise it as their own. This unexpected development, and the prospects of a new family, brings them much joy before ultimately destroying them.

When aspiring musicians Lars and Sigrit are given the opportunity of a lifetime to represent their country at the world’s biggest song competition, they finally have a chance to prove that any dream is a dream worth fighting for.

Gunnar and Sonja are a married couple that had it all, money,love and a beautful daughter. But after the death of there daughter their world falls apart. To make things worse Gunnar is in the middle of a trial, being charged with illegal sales and purchase on behave of his company. When Gunnar and Sonja inherit Gunnar’s niece Perla, the couple take on a weekend journey to pick up Perla, who is staying at a remote house in the Icelandic country side where she lost both of her parents in a horrible way. When Gunnar and Sonja arrive at the house strange things start to happen.

As a ferry carrying 300 passengers from Denmark pulls into an Icelandic town’s small port, heavy snow begins to fall. The ferry can’t leave until the storm passes and the main road into town is impassable. A mutilated and dismembered body washes on the shore, an unidentifiable man murdered only hours ago. The local police chief, Andri Olafssun, whose personal life is in shatters, realizes a killer has descended into his town. As word spreads, order disintegrates into chaos as the ferry’s passengers and the town’s residents realize they are all possible suspects and that a killer is trapped among them.

Fortitude is a place like nowhere else. Although surrounded by the savage beauty of the Arctic landscape, Fortitude is one of the safest towns on earth. There has never been a violent crime here. Until now. In such a close-knit community a murder touches everyone and the unsettling, mysterious horror of this crime threatens the future of the town itself.

The local Chief of Police, Sheriff Dan Anderssen, has to investigate alongside DCI Morton, the detective who has flown into Fortitude so fast that questions are being asked about how much he knew, and when. As these two cops try to make sense of the killing, each finds compelling reasons to mistrust and suspect the other.

The murder is a catastrophe for Hildur Odegard, the town’s Governor. It threatens her ambitious plans to transform Fortitude from a mining town into a site for high-end tourism. And for Henry Tyson, a wildlife photographer who only has weeks left to live, the murder is the catalyst to unearthing Fortitude’s darkest secret.

Also key to the story are Charlie Stoddart, an English scientist who heads up the Arctic Biology department at the Fortitude Arctic Research Centre, talented young scientist Vincent Rattrey, the newest member of Burke’s team, and Jules Sutter, who is married to Frank Sutter, Fortitude’s chief search and rescue pilot.

As the cold Arctic darkness gives way to endless summer nights, this apparently idyllic community struggles to make sense of the murderous horror that has been let loose in its heart.