One spring day when the autumn colors had filled, three members of the movie club suddenly decide to borrow a senior's car and take a trip to an isolated village in Mountain Nae-jang. Being the first trip there, they get lost a little and witness a terrible accident but picked up a navigation device nearby. The kind voice on the device leads them to there destination but they end up somewhere they never expected. They decide to take a break and find a piece of flat stone to grill some meat on but realized the stone was a gravestone and run away in their car. Their tragedy starts when someone jumps out from nowhere and is hit by their car...
The patients and staff of a secluded heroin treatment center must do battle with more than their own demons as a mysterious killer begins picking them off one-by-one.
