Jung Yoo Mi and her students come to Yoogok Elementary School in a rural town as a part of an exchange program. They are spooked by a campus ghost story told by Kim Gye Dong, a teacher at the school. But the students’ curiosities get the better of them and they decide to search every nook and cranny for the ghost. Unfortunately, it is Yoo Mi who runs into the ghost whenshe goes to the bathroom at midnight. The campus ghost story now becomes real to everyone at the school. The fearless threesome, Tae Sook, Chul Soo and Hoon, decide to go to the annex building where the ghost is believed to reside in. But Man Dook warns them vehemently against going there.