The TV series "The Walking Dead: Dead City" is a spin-off of the "Walking Dead" universe. The story revolves around Negan and Maggie, and takes place in post-apocalyptic Manhattan. The characters manage to make their way to an island that is cut off from the rest of the mainland. Once a place of vibrant nightlife, Manhattan is now filled with decaying and highly aggressive zombies. However, it is discovered that a more intelligent form of life has survived on the island. People have established a beautiful yet dangerous anarchic colony there.