Nick (Geert Van Rampelberg)'s younger brother disappeared mysteriously when he was very young. The only suspect was released on parole due to insufficient evidence. This incident became a dark cloud in Nick's heart that could not be dispelled. After growing up, Nick became a detective. While punishing evil and promoting justice, Nick never forgot his missing brother for a moment, and never gave up the pursuit of him. Nick took over a bizarre disappearance case. What surprised him was that the family of the case chose to keep silent about the disappearance of their children, and the most suspicious one was the father with strange whereabouts. As the investigation deepened, the doubts in the case surfaced one after another. What shocked Nick was that this case seemed to be inextricably linked to the disappearance of his brother.