Dae, an insecure art director of commercial production is left alone to clear up a 6-meter-deep deserted pool after the shooting. He falls asleep on an inflatable raft due to unbearable fatigue. When he wakes up, the water level has sunk so low that he cannot climb out of the pool on his own. He screams for help, but the only thing that hears him is a creature from a nearby crocodile farm.