In the heart-pounding adventure horror film "Kuncen", two friends join a perilous quest to uncover the truth behind their missing loved ones on Mount Merbabu, a mountain shrouded in mystery and terror by local legend. Following the tragic death of the mountain's caretaker at the hands of black magic, Awindya, Agnes, Mojo, Yoga, and Diska band together to find the new guardian - the Kuncen - who holds the key to their friends' disappearance.