Fumi Nishioka lives with Kyutaro Horikita and his family of "Sweepers," people who specialize in cleaning the minds of those overcome by negative energy and harmful spirits. Fumi has always displayed mysterious abilities, but will those powers be used for evil when she begins to truly awaken as a Queen?

Kyutaro manages to lure the Seiryu snake into his and Fumi's special Mind Vault, where much is at stake! Will Kyutaro be able to defeat this wily snake and save Aoi Shinonome, the man slated to be the next leader of the Seiryu Clan? Meanwhile, members of the mysterious Suzaku Gate break their silence!