Recently promoted to sergeant, Don Barton is back at Newbury where he is placed in charge of a dysfunctional team of young constables.

While he strives to knock his shift into shape, darker forces are conspiring against him. The psychopathic terrorist, Irene, has been released from prison and is determined to take revenge on Don for his part in her arrest.

At the same time, a patient walks away from an Oxfordshire mental hospital, ready to declare war on the world. Back in Newbury, Sean Treadaway, a vicious local thug, has vowed to rip Don’s lungs out.

When he needs support the most, Don’s old boss has retired only to be replaced by a superintendent who hates him for damaging his career. Can Don survive the convergence of evil that now surrounds him, and bring the criminals to justice?