Five long-lost friends embark on a joyous reunion, unaware that a hidden observer from past watches their every move, waiting for the perfect moment to strike them down one by one. As the friends fall victim to a string of brutal murders, each death reveals the depths of the killer's festering grudges.The motive behind the killings remains shrouded in darkness, the victims mere pawns in a twisted game of vengeance. As the friends scramble to connect the dots of their dark past, they must race against time to uncover the identity of the murderer. How many lives can they save before the killer reaches the next target?