John Knox is an experienced assassin haunted by the weight of his actions. He had been contemplating retirement, but everything changes when his long-lost son, Miles, unexpectedly shows up at his door, desperate and drenched in blood, seeking his aid. This unexpected turn of events forces Knox to alter his plans. With the help of his loyal friend, Javier, he must come up with an intricate strategy to confuse the relentless pursuit of the police, seeking redemption for his sins, and simultaneously rescue his son, whom he hasn't seen in years. The situation becomes even more challenging as John battles against a rapidly advancing form of dementia, adding urgency to their race against time.