The Replacement

The Replacement is a short film, starring Donald Duck, is directed by John Lasseter, is preceded by Phineas and Ferb (film).

Plot
Daisy asks to Donald to teach to their students, but Donald has no idea that students are capable.

Cast

 * Tony Anselmo as Donald Duck
 * Tress MacNeille as Daisy Duck
 * Russi Taylor as Daisy's students