Ten years ago, there was an explosion at Hisanos apartment building. She would have been there, but shed been hit by a bike ridden by a boy in blood-stained clothes. He dropped a toy scale when it happened, and shes been hanging on to it as a good-luck charm ever since. Now Hisanos in high school. One of her teachers was murdered, and the police are investigating. A young man suddenly appears carrying the toy that scale belonged to. And perhaps... can he also see the hallucinations Hisano has always been plagued with? Everything is connected as the pattern slowly rises to the surface.