Maya Kumashiro despises the occult, but her father's death forces her to return to Waldstein Academy, famous for its supernatural incidents, to take over as principal and shut the place down for good. Her plans collapse when a stranger calling himself Minoru Abe falls from the sky claiming to be a time agent from 2012, sent back to 1999 to keep the Nostradamus prophecies from coming true. Maya reluctantly teams up with him to investigate the academy's bizarre phenomena and find out why he was really sent back.