Honoka has been diagnosed with Retrograde amnesia, this is something the makes it difficult for someone to retreive memories that had occured before a specific accident which involved damage to the brain. Honoka is sent back to her parent's home in a town she apparently once lived in. However, Honoka cannot remember anything that happened in the town nor can she remember even living in the town. As Honoka becomes more and more confused unusual things begin to happen and Honoka begins to really question why she cannot remember what happened in her past. And who is the mysterious boy she continues to see?