During the late 1980s, two detectives in a South Korean province attempt to solve the nation's first series of rape-and-murder cases.
A teenage girl is captured by a giant mutated squid-like creature that appears from Seoul's Han River after toxic waste was dumped in it, prompting her family into a frantic search for her.
An idle part-time college lecturer is annoyed by the yapping sound of a nearby dog. He decides to take drastic action.
