After the climate wars, a floating city was constructed in the Arctic Circle. Once a remarkable feat of mechanical and social engineering it is now rife with corruption and the population simmers with unrest.

Into this turmoil comes a strange new visitor - a woman accompanied by an orca and a chained polar bear. She disappears into the crowds looking for someone she lost thirty years ago, followed by whispers of a vanished people who could bond with animals. Her arrival draws together four people and sparks a chain of events that will change Blackfish City forever.