The Mobile Unit's first case is all the way across the world in Japan. Orla is disappointed when the task is super simple: return a plant to the 17th dimension. All it requires is putting together a build-it-yourself portal. But when Orla rushes through constructing the portal without reading the instructions, Omar, Oswald, and Opal end up stuck in the 17th dimension. Oswald finally lands an interview on a famous Odd Squad podcast to talk about the new Mobile Unit van. But he is only familiar with the main floor of the van and hasn't yet ventured into any of the other 87 floors, including those below ground level. In his attempt to learn more about the van, Oswald gets lost and risks missing his interview altogether.