When the 10th Muse battles the villainous Hellfire, she's unexpectedly transported to the secret city of Xanadu. There, she meets its enigmatic ruler, Kubla Khan, who urges her and Hellfire to form an uneasy alliance. Together, they must face a powerful wizard intent on spreading darkness across the land. As ancient powers clash and unholy pacts are forged, the fate of the realm hangs in the balance in this epic struggle to prevent eternal night.