Freshman Nimura Kensuke has the ability to see ghosts, and his life changes when he meets Kagura, a girl with the power to summon a "Ga-Rei" called Byakuei. The two work together to find evil spirita and devour them with the Ga-Rei.
The Japanese Ministry of Defense has an anti-paranormal special forces group called the Supernatural Disaster Prevention Office. They are the ones responsible to protect Japanese soil and its people from supernatural and paranormal events. However, things didn't go so well in one of their missions...