Leonard Maltin gets clearance to venture into Disney's Animation Research Library, home to just about everything the studio has created. Animators Mark Henn and Andreas Deja are interviewed, and they reveal their first experiences with Disney animation and Mickey Mouse in particular. The two also discuss their favorite Mickey Mouse films and show some of their artwork from scenes they worked on in"Mickey's Christmas Carol" and"The Prince and the Pauper." Modern animators are compared with the animators of the early Mickey Mouse shorts, trendsetters to whom there was no opportunity to study animation.