Earth is tidal locked. One half of the planet is a desert, scorched and desolate. The other is completely frozen. In the twilight shadow between the two extremes there exist pockets of life. They are all disconnected, isolated. Each assumes they are alone.

In the city of Axiom, time has erased any memory of a different way of life. Its Residents accept their day-to-day existence, willingly following the rules without a hint of curiosity about what may lie beyond their walls.

Bevan Hughes has never known anything different but since his world was torn apart by the abduction of his wife he has begun to question it all. A device from a bygone age and a message from an unknown source may just be the key to escaping to a new life.

Meanwhile, crack sniper and pawn of the ruling regime, Rosalyn Torres, faces a similar life shattering incident which sees her embark on a mission of revenge.

Their paths cross as they flee from Axiom into the desolation beyond the city walls...