Amy Dorrit spends her days earning money for the family and looking after her proud father who is a long term inmate of Marshalsea debtors' prison in London. Amy and her family's world is transformed when her employer's son, Arthur Clennam, returns from overseas to solve his family's mysterious legacy and discovers that their lives are interlinked.

Henry Drax is a harpooner and brutish killer whose amorality has been shaped to fit the harshness of his world, who will set sail on a whaling expedition to the Arctic with Patrick Sumner, a disgraced ex-army surgeon who signs up as the ship’s doctor. Hoping to escape the horrors of his past, Sumner finds himself on an ill-fated journey with a murderous psychopath. In search of redemption, his story becomes a harsh struggle for survival in the Arctic wasteland.