Gotham City has Batman and New York has Spiderman, but what dark hero protects the gritty, future Tokyo? The answer is the Karas, the main characters of this feature-film-length anime of the same name. Blending 2D cell-shaded animation and 3D computer graphics, Karas: The Prophecy finds the delicate balance between the humans of Tokyo and the ghostly beings that inhabit the city in a parallel universe suddenly disrupted. For thousands of years, the peace has been kept by noble beings called the Karas, who strive to make both the dark and light sides live in harmony. Power breeds corruption however, and now Eko - a former Karas who once swore to protect the city and maintain the balance there -- has since grown bitter and vengeful. He has granted some malicious poltergeists physical bodies so that he can personally rule the humanity he once served. The incarnate of the city, Yurine, must come to the people's aid and so she creates a new Karas to battle the old one. Two Karas have never existed in the same city before, and as a battle for the fate of humanity ensues, it is certain that only one will remain.