Suria, who has just been appointed as the new “Spirit Princess,” is reunited with her childhood friend, Reiss, with whom she had a falling out. Several years have passed since that bitter memory and Reiss, now known as the heartless “Devilish Knight,” is entrusted with the important task of being her escort. The two now have to travel together, bringing out Suria's old wounds and a secret that Reiss has been hiding…