An employee at the junk shop, "Mediocrity", Aoba is a young man who lives together with and cares deeply for his grandma. He doesn't like too much fuss, but has a hard time saying no when asked for help. He's often afflicted with strange, inexplicable headaches.

After finishing work one day, he notices a series of strange events occurring one after another, throwing what should have been an "ordinary" day into complete chaos...