Gi Cheol begins work as a contract gym teacher at a high school in a quiet countryside village. He feels weird because a female high school student went missing, but nobody in the village seems to care. Only Yoo Jin, who is the missing girl's friend, is sure that her friend has been kidnapped. Yoo Jin and GiCheol work together to find the missing girl, but Gi Cheol learns that traces of the missing girl are disappearing.