When Max discovers an old GPS car navigation unit in the storeroom, he and Oscar risk another excursion down to the ground to discover its real purpose. They find a way to switch it on and realize they can see the previous owner's journey history. They decide to retrace the owner's most recent trip—made on Jan 22, 2018! The device sends Max and Oscar onto streets that no longer exist, directly into the scene of an art robbery. To avoid discovery, Max and Oscar hide in the thieves' van-copter and are taken far beyond the borders of Bluggsville. Max and Oscar must find a way to use the rusty navigation unit to apprehend the thieves, and find their way home.