Mount Chiak (Chiaksan Mountain)

synopsis

A group of friends -- and mountain biking enthusiasts -- go to the forest cottage of YeonJi's (Kim YeWon) deceased father, who mysteriously disappeared on this same mountain years ago. But when eerie red lights, ear-piercing noises, and strange entities in the woods begin terrifying the group, it's just the beginning of horrifying things to come. What evil forces are haunting them? Every step they make to correct a mistake only makes things worse. Then circumstances inspire one impulsive, reckless act after another, and these ordinary people find themselves doing horrendous deeds. In the meantime, a hidden laboratory in the cabin basement is found. And something unidentified and malevolent is now chasing them! A desperate journey begins for the party to survive on Mount CHIAK.