A mystery hangs over the remote island of Manwol. The locals have all perished after being turned into monsters in an experiment by the imperial army. But Geumran, a young deaf girl, inexplicably survives, recovering her hearing and gaining incredible strength. Though she kills all of the soldiers in cold blood, Geumran soon learns that the same fate that befell the villagers awaits her too. Finding those responsible for the experiments thus becomes her only hope for survival... and vengeance.