SIEGE OF LANTERNHOLM! Kryl-Ux has unleashed a Sun-Eater in the heart of Lanternholm: the galaxy's only safehaven for the Lightborn people, and the reason for the rift between Ronan and Rowan Kent, who left Earth to become Lanternholm's guardian. Superman has arrived just in time, but survival comes with a heartbreaking cost. And Ronan has started receiving information from a dark source--can Superman continue to count on him to help save Osul-Ra and Otho-Ra before it's too late?