Batman / Superman: World's Finest #28

HEROES UNITE TO SAVE THE FIFTH DIMENSION — AND THE EARTH! Something is destroying the fifth dimension — and if an army of evil imps can obliterate all the joy and life from an entire reality, what chance do Superman and Batman stand against it? A multitude of DC guest stars — and their fifth-dimensional counterparts — join the World's Finest duo in a last-ditch attempt to save Earth from the ultimate darkness!