Superman/Shazam!: First Thunder (2005-2006) #1

While Superman must stop members of a cult from stealing an ancient artifact from the Metropolis Natural History Museum, Captain Marvel must defeat giant robots rampaging through Fawcett City. When the same cult attempts to steal an artifact from a Fawcett City Museum, Superman drops by to lend a hand, and teams up with Captain Marvel against an all-new threat!