The heart-burning origin of how Ches and Mo meet, develop a friendship and flee the insane clutches of mad Doctor Wackerstein, the brain of Doc's late favorite pianist, Flatnoteski, and Doc's avant-garde wife, Olga.

Ches and Mo become surrogate parents as well as living play-toys for an irritable 600-pound Baby Pookers left on their doorstep. After eating the carpets and soiling enough diapers to top off a landfill, it becomes clear what the gigantic infant's real purpose is for dropping in on our duo.

Ches and Mo take over burnt-out Sappy the Clown's kid's party entertainment business with disastrous results. In hot pursuit, Doc and Olga crash the party.

In an effort to save a few bucks, Ches elects to bring Mo's head aboard an airplane as carry-on luggage. A demented Doctor Wackerstein barely pilots the air-bus while stewardess Olga preps the passengers on how to save their worthless lives in case of emergency.

A wrong turn from a tour bus leaves our boys stranded at a strange monastery, where there's more monkey business than a barrel of — well, you get the idea.