After the recent death of his father, 17 year old Ishimura Saburo moves from Tokyo to a small village called Kawamura with his mother & little sister to stay in his old grandfather's house. In Saburo's first few days in Kawamura, he meets some odd people, including Madoka, a strange girl around his age who appears to lack any feelings or emotions. Before long, it's apparent that everyone at the village is hiding secerets and they refuse to tell outsiders anything. Even his grandfather, who's lived in Kawamura all his life won't give away the secerets he holds.
Saburo is enrolled into the school a few days later and becomes a journalist for the school news paper. Not long after, while researching at the village library for a recent story he's working on, Saburo accidentally uncovers a mystery in Kawamura dating back 10 years. An entire year of history is missing. Was it not recorded, or was is erased? His curiosity sets Saburo on an investigation of this own to try and figure out what happened 10 years ago. The deeper he digs though, the more connections he finds between these people and the mystery.
But as Saburo uncovers more of the mystery, strange events begin to take place. Everyone in the village becomes hostile and tires to keep him from searching deeper into the past. Even his grandfather tries to get in his way. Can Saburo figure out what happened 10 years ago?