In order to challenge the bonus, four fishing friends stepped into the mysterious Blackwater Reservoir late at night. The wind was biting and deathly silence enveloped the place. The phantom in white looms, and the cold fishing line wraps around the wrist like a ghost's hand. When invisible terror drags one person into a deep pool, the other person steps into the water to save him in a way that goes beyond common sense. In the aftermath of the disaster, a cold truth that had been hidden for twenty years suddenly tore the boundary between life and death with an unexpectedly slipped item. Who among them is the real "guest" waiting for the reservoir?
