In the heart of Tokyo, eerie echoes of unsolved deaths from seventy years ago resurface as young women start perishing in the same mysterious manner. College student Miho grows increasingly wary of an unsettling stranger who appears to be tracking her movements through the city. Her friend Azusa, drawn into a private encounter with their professor, uncovers a chilling secret about his nature that endangers them both. Forced to flee for their lives, the pair must outrun a threat far more sinister than they ever imagined.