During summer break, a couple of friends decide to play a test of courage by hunting down a rumored ghost that is supposedly appearing throughout the city. During their quest, Haruka starts seeing something that her friends are unable to see, blue snow. Two friends in the present must now help freedom fighters from the future battle the evil dimension Shangri-La. With the help of a group known as the Dragon Calvary, Haruka and Yuu travel through space and time to save the universe from imminent destruction.