SAISON: 21
EPISODE: 10 - Once Upon a Time in Springfield
SYNOPSIS
Ratings for Krusty's TV show start to fall, so executives bring in co-star Princess Penelope (voiced by Anne Hathaway) to increase its appeal, and romance soon blossoms between the clown and his new sidekick. Elsewhere, Mr Burns cuts costs at the nuclear plant by taking away the staff's free doughnuts.