After a day of simmering tension on a trip to an uninhabited island, Júlia snaps and leaves her husband Gíó marooned in the middle of a freezing fjord in the depths of the Icelandic winter, with night drawing in.

When she regrets her decision and returns, he is nowhere to be found. The police launch a manhunt, but soon their suspicion falls on his wife.

She spins them a story to hide her involvement, but she can feel the net closing in.

Is Gíó alive or dead? In hiding or hunting her down? And can Júlia get to the truth before it destroys her?