Anepidemic of drownings, with victims jumping into the river causes panicaround the country. The government declares a state of emergency. Medical supplies salesman Jae-Hyuk (Kim Myung-Min) suspects his family is showing symptoms of the drowning victims. Through his brother, Detective Jae-Pil (Kim Dong-Wan), Jae-Hyuk learns an antidote may be stored by at a warehouse.