Nothing, on earth or below it, freezes faster than the worthless heart. Before she was a hideous monster, the queen of the underworld was simply Hel. But cast as a girl out of lofty Asgard, realm of the gods, by Odin the Allfather, Hel's fate as the terrible goddess of death is sealed. Half beauty, half crone, she has reigned for aeons in the starless darkness of Niflheim, grimly welcoming the most pitiful of death's travellers to her ice-locked prison. Until one day a memory shifts, and she is forced to seek out the sun in Midgard, where humans have made their home. Faced with a terminal cancer diagnosis, Helen Firth makes the impulsive decision to return to Orkney after forty years to make peace with her past. Under the wintering solstice sun, she reconnects with the ungainly but affable Thorfinn Coffin, who helps her address the real reason she has returned to the islands - to die.