W. MAXWELL PRINCE AND MARTIN MORAZZO TAKE SUPERMAN TO EVEN WEIRDER HEIGHTS! Superboy and Captain Marvel ride the rickety roller coaster (literally!) through the many-hued amusement park of motley meteoroids that is the Kryptonite Spectrum! With Superman now a bit…shorter in the tooth…the Boy of Yesterday must team up with a truly Marvelous friend in a story for the ages…for all ages! What, exactly, is Nostalgia Springs? And what do Toyman and Sivana have to do with it? Find out in this great adventure–chock-full of crayons, Kryptonites, and a cruise through comics chronology!