In the early 22nd century, humanity left Earth en masse after pollution hit a staggering high, which rendered their planet uninhabitable. The journey through the stars was only meant to last as long as it would take for BnL's line of waste-processing robots and trash incinerators to clean their home from top to bottom and make it a safe, healthy place to live once again.

Seven centuries later, human beings had just begun to make the return trip, albeit severely out of touch with their roots due to how engrossed they'd been with the idyllic technology that they barely had to lift a finger for. Now, they had to relearn their most basic instincts, with the aid of the many, many robots aboard the Axiom that now lived alongside them, and work together to bring Earth back to its former glory... and to finish the job one little robot - the last functional one of his kind - had started all those centuries ago.

For M•O, his inherent compulsion to clean shone brighter than ever now that there was so much to tidy up. First and foremost was the place that his friend, 'savior' and prime carrier of [FOREIGN CONTANIMENTS] WALL•E called home, now alongside EVE; a transport hauler for his model that had been converted into a shack full of keepsakes and trinkets that the trash compacting robot had found over the past seven hundred years he'd been active.

This was the motherload for M•O. So many [FOREIGN CONTANIMENTS], so little time. Fortunately, the 'reject robots' that had been aboard the Axiom came to help, later joined by another certain robot who had no idea what to do beyond their directive. By no means was he going to turn away help, so he made good use of his skills as the Axiom's top cleaner and put them to work.

However, M•O quickly discovered that they were not a natural cleaner. Withholding his frustrations, he valiantly attempted to show them the basics by scrubbing dirt off the entry ramp to the truck with his cleaning rollers, and waited for them to emulate him.

...

...This might take a while.