|Kenan Thompson||Fat Albert|
|Shedrack Anderson III||Rudy|
|Jermaine Williams||Mush Mouth|
|Aaron Frazier||Weird Harold|
|Marques B. Houston||Dumb Donald|
|J. Mack Slaughter Jr.||Arthur|
Animated character Fat Albert emerges from his TV universe into the real world, accompanied by Old Weird Harold, Dumb Donald and Mushmouth . Though the gang is flabbergasted by the modern world, they make new friends, and Albert attempts to help young Doris become popular. But things get complicated when Albert falls for her older sister, Lauri, and must turn to creator Bill Cosby for advice.