A homicide detective, trapped in the routine of his work, becomes obsessed with a case that will mark him forever. Following the brutal murder of a little girl in a quiet town, Jerry Black, an agent on the verge of retirement, feels compelled to find the culprit. Despite the pressures from his department and the impending arrival of his retirement, Jerry promises the girl’s mother that he will do everything possible to solve the case.
As the investigation progresses, Jerry immerses himself in a dark labyrinth of clues and suspicions, uncovering the depths of fear and desperation that inundate the community. His compassion turns into a burden, while his personal life crumbles around him. To extreme lengths, Jerry encounters a man who seems to fit the profile of the killer, but things are not as simple as they appear.
Confronting his internal demons and the revelations about human nature, Jerry clings to his promise, risking his own life and sanity in the process. As the truth emerges, it becomes a dangerous game between justice and sacrifice, where the desire for redemption pushes him to the limit. The decisions he makes will not only affect his fate but also question the morality of his commitment, making him wonder: how far would you go to keep a promise?