Yorito Morimiya is a young boy who loves taking pictures of the sky, and one day in the early morning while setting up to take a snapshot of the sunrise, he meets a strange girl. After talking with her for a few minutes, she disappears and is nowhere to be found. The next day, Yorito is coming back from buying some groceries on a rainy night and runs into the same girl; this time he finds out her name to be Matsuri Shihou. Later on, Yorito figures out Matsuri lives in a church and goes to find her. At the same time, Matsuri is being hunted by a mysterious man.