A psychologist connects her missing brother to the strange case of a mysterious little girl believed to be Sadako reincarnated.

One day, people suddenly become zombies after being exposed to a liquid that fell from the sky. 15 years later, Koko Koko lives a solitary life deep in the mountains, and when a man joins her, her life changes little by little...

A psychologist connects her missing brother to the strange case of a mysterious little girl believed to be Sadako reincarnated.