When the Mobile Unit gets ranked low on the Odd Squad Magazine progress reports, Opal and Orla kick into competitive mode and try to solve as much oddness as possible. Meanwhile, Omar and Oswald visit the Chief of Graph at the Odd Squad Graphing Headquarters in hope of figuring out a safer solution.

The Mobile Unit gets called back to the Museum of Natural Odd when Oswald's replacement, Ortho, has gone radio silent. But when they arrive and find out an ancient stone warrior has been let loose, they must de-code Ortho's strange numbering system to capture the stone warrior and save the museum.

The Mobile Unit is called to Pinehurst, North Carolina to stop a villain who is stealing various objects. If they don't catch the villain in time, the local Odd Squad will be forced to cancel their annual mini golf tournament. But the Mobile Unit is having trouble figuring out who the villain is, because they don't know what the stolen objects share in common.

Orla is kicked off the squad when a library book she took out 400 years ago is overdue. The Mobile Unit must use budgeting to turn their $1 into $10 to pay the late fee, or else Orla will not get her badge back.

There's a villain turning train cars odd, and the Mobile Unit must figure out the pattern in which the villain is striking. Oswald takes it upon himself to solve the train mystery just like his favorite book character: Detective Shmumbers.

The Mobile Unit is called to investigate an odd tunnel that some (but not all) agents have disappeared into. When Omar insists they drive the van through the tunnel, he ends up stuck in a white void all alone. By collecting and comparing data, Omar must figure how to escape.

When Omar catches a case of Clown-i-tosis, Orla must keep track of him in the van before he runs off to join the circus.

When Orla is accidentally responsible for breaking up the band Soundcheck, the Mobile Unit team must use Venn diagrams in order to convince the band members that they have things in common and reunite. On top of that, the Mobile Unit must make sure a villainous rival band doesn't hypnotize people with their music. To do that, they have to learn how sound works.

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.