When Arctic guide Edie Kiglatuk stumbles across a body abandoned in the Alaskan forest, she little imagines what her discovery will lead her to. With the local police convinced the death is linked to the Dark Believers, a sinister Russian sect, Edie's friends insist she leave the investigation to the proper authorities. But remaining in the area as part of the support team for her ex-husband Sammy's bid to win the famous Iditarod dog sled race, Edie cannot get the image of the frozen corpse out of her mind. While Sammy travels across some of world's toughest and most deadly terrain, Edie sets off on an investigation which will take her into a dark world of politics, corruption and greed - as a painful secret in her past finally catches up with her . . .