Teenager Midori's family moves back to the city where she lived as a child and is relieved to discover that her old friend Ryusuke still lives there. Her terrifying nightmares begin intersecting with her everyday life. Do her nightly dreams about an anonymous fortune-teller have anything to do with the tragedies plaguing her high school?

Some students decide to set up a play written by one of their classmates, who has commited suicide. The play is based on a tragic and mysterious legend about a love affair between two teachers at the school long ago. Some girls then accidentally stumble over some information about the legend, and the girl who commited suicide. Shortly after, the girls start turning up dead in seeming accidents.