Manchester: an injured survivor from a motorway pile-up flees the scene, leaving behind evidence that a terror attack is being planned... Jon Spicer, newly trained as a Specialist Firearms Officer, has joined Manchester police's Counter Terrorism Unit. Thrown out of his previous department and demoted to Detective Constable, he is being kept in the force only because he'll take on the most dangerous of jobs. Iona Khan is struggling to find respect and recognition in the male-dominated Counter Terrorism Unit. Her mind might be sharp, but many of her colleagues value physical strength above anything else. As the investigation quickly snowballs, Spicer and Khan are thrown together. The two officers must learn to trust each other - and fast. Because in this chase, any wrong move could be your last.