Shu Fen's teenage daughter, Ya Ting went missing after a fight they had over Ya Ting's unplanned pregnancy. A medium, Mei Hua believes that Ya Ting was taken to the mountains by evil spirits. Shu Fen organizes a search party to find her daughter. One of the searchers, Jun Kai finds a girl, Yi Jun in an abandoned hospital on the mountain. Believing that Yi Jun is somehow connected to her still-missing daughter, Shu Fen lets Yi Jun stay with her only for the both of them to experience strange occurrences that can all be traced back to the myth of the little girl in the red dress. They all decide to go back to the mountain to search for Ya Ting one more time, but they might just end up finding something else.