In Boston, a skilled bomb disposal expert named Jimmy Dove works for the police department, defusing bombs and saving lives. As he prepares to retire and move on to a quieter life with his girlfriend, his past comes back to haunt him in the form of his former mentor and a bitter terrorist named Ryan Gaerity. Gaerity, recently escaped from prison, seeks revenge against Dove for betraying him years earlier in Ireland. Gaerity's reappearance is marked by a series of deadly bombings that target Dove and those close to him, forcing Jimmy back into action to stop this relentless adversary.

Gaerity becomes increasingly unhinged and his bombs more sophisticated and unpredictable, pushing Dove to his limits both professionally and personally. With his loved ones in peril, Jimmy must confront his dark past and the demons he thought he had left behind. As the tension mounts and time runs out, Jimmy races against the clock to outwit Gaerity in a high-stakes battle of wits and survival, facing life-threatening situations that test his skills and resolve like never before.