A star fell from the sky, and the star was a starfish, and the starfish was Starro the Conqueror. With every hero and villain under the star conqueror's sway, the CHS eight must fight not just Starro and his herald, The Faceless Hunter, but also their friends and allies. To combat the star conqueror, Sunset and the others must forge alliances with those who they have previously fought against and some forgotten heroes. It seems that the fate of the whole world may lay in the hands of a mysterious girl called Gali. Who is she? And Where did she come from?