The story revolves around 2 young people who met each other on a countryside road. Kang Myung was hitchhiking and was picked up by Su-ji on her way to see her brother-in-law. But when she arrives at her destination they find Su-ji’s brother-in-law dead. Soon the police start to suspect Kang Myung. Shocked and skeptical about the events, the dynamic duo decides to search the surrounding area. Kang Myung discovers that scientists are working at a lab with a supersonic transmitter. Soon, more strange things start to happen in the nearby forest. After looking around all day, Kang Myung and Su-ji decide to do further investigation in an old abandoned house where they are suddenly attacked by a horde of undead.