The Mobile Unit is called to Odd Squad's Top-Secret Security Facility where an unknown villain has broken in to get to the mega-computer. But when Lady Bread, Wheelie Dan, and the Utensiler all claim to be the villain responsible, the team must recreate the break-in to discover the true culprit. "The Shadow" hosts a meeting of villains worldwide in order to convince them to join her Villain Network. But when she shows them their decline in villainy on a line graph, it catapults the villains into a game of blame. She must come up with a line graph that will convince them all to join, or her master plan will fail.