In order to save Poddleville, Jackie and Annie need to figure out the pattern for the podlock before Hacker and his henchmen. They take the back entrance to the vault and attempt to unlock it from there. After some thinking and discussion with Matt and Inez, Jackie figures out the pattern and enters the vault, saving Poddleville from Hacker.
The narrator explains that mathematics is much more than simply numbers and equations. He shows how different shapes, such as spheres and cones, can be found in nature and are used in technology both at home and in several industries.
Matt, Jackie, and Inez try to figure out what Hacker is planning. They find Annie, a triangle poddling, who lists out the numbers and shapes of pods that Hacker has stolen thus far. They order the numbers and discover a pattern: Hacker is stealing only odd-numbered pods.