After chasing Dr. Sivana, Billy find himself in a open field where he saw the Justice League battling the starfish alien Starro, which Billy quickly said, "Hold on, Justice League!" and Batman, fighting Starro, ask Billy, "Who are you?" which Billy said, "What?!? You don't know me?" Martin Manhunter said as he try to get freed from Starro, "This is a fellow hero from the future. Captain, this is our first time battling Starro!" and Billy said in surprise, "Holly Molly! That must mean that I'm in the early years of the Justice League!" Suddenly, a green beam hit the Justice League and weaken them, and Dr. Sivana come out of hiding and said to the alien threat, "Starro, I'm Nyarlathotep! I have help you defeat the Justice League, and you will now be free to take over this planet!" Billy come forward and shout, "Not if I have anything to do with it!" and Starro come toward Billy, whose remember that he can control others and he quickly shout, "Shazam!" only for the magic lighting to hit Starro, giving Billy a idea and he keep shouting Shazama over and over until the starfish alien is defeated. As Billy turn to Dr. Sivana, the mad scientist said, "I must be honest that I didn't see this coming." and flee to a time tunnel, which Billy quickly followed. When the time tunnel closes, the Justice League begins to awake up with the defeated Starro still out cold and Superman ask, "What just happened while we were out?"