Momoka Sendou (nicknamed "Dragon Girl") and Ryuga Kou are childhood friends. Momoka is a martial artist, and Ryuga is a Chinese magic master who banishes demons. In order to increase his power, Ryuga calls on the spirit of a dragon to possess him, but the spirit enters Momoka instead. Now the two must unite forces and fight demons together! Momoka and Shuran befriend the spirit of a young boy who can't remember who he is or how he died. The girls try to help, but Ryuga wants to banish him immediately—especially after he learns the boy took possession of Momoka's body!