After a brief team up with Batman and Big Barda in their battle against the Parademons, Superman is transported to a planet orbiting a red sun by Steppenwolf. This is part of Steppenwolf's plan to kill Superman and become a legend. Now with his powers slowly depleting, Superman must defeat Steppenwolf and get back to Earth. As this is happening, Batman and Big Barda head to Darkseid's fortress on Apokolips in order to find information on where Superman is transported to.
