A gym teacher and his female student look for her missing friend. But as they investigate, they find that her disappearance is a part of a larger conspiracy. While working at a village school as a PE teacher, a former boxing coach gets involved in a missing person case that is not being taken seriously by the locals and the authorities. 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 disappears, they find that her disappearance is a part of a larger conspiracy .