A Carcharodontosaurus has been sighted in China, and it causes fires near the Great Wall of China! Rex gets mad at Max after Chomp and Ace accidentally breaks a fossilized ammonite. Max, Rex, and Zoe transport to China, and get into a heated discussion with Ursula, Zander and Ed. When the Carcharodontosaurus gets in a fight with Terry, he uses "Fire Cannon" at Terry and it hits the Great Wall, getting Zoe buried under the leftover rubble in the process. When Max and Rex keep arguing on how to stop the Alpha Gang and save her, Zoe tells them they have to work together to accomplish that.