Detective Shaw is preparing to retire when his final day on the job takes a terrifying turn. He learns that a ruthless serial killer has buried his son alive, leaving him with only a limited amount of time to save him. Desperate to uncover the truth, Shaw must solve three connected murder cases that may hold the key to finding his son's location. As the clock continues to tick and the pressure intensifies, he becomes locked in a deadly battle of wits with a killer determined to stay one step ahead. Facing impossible odds and racing against time, Shaw must rely on every skill he has developed throughout his career to rescue his son before it is too late.