"First Thunder, Part 2: Odd Couples" - Dr. Sivana consults with Lex Luthor for assistance in dealing with Captain Marvel. Meanwhile, Superman and Captain Marvel attempt to foil the Fawcett City Museum robbery. They fail to stop the heist but quickly form a bond. The cult members put the stolen artifacts to use and transform Timothy Barnes into Sabbac. Plus, another longtime DC villain shows up for the mayhem to ensue!