The Mailman decides to stop another deluge of letters by answering questions about the Easter Bunny: Sunny, a baby rabbit found and adopted by Kidville (a town of only kids--even a kid mailman). And when Sunny goes delivering eggs to the nearby town (which he has to dye to fool Gadzooks, the mean bear on the mountain), he discovers that there are no kids in the town, and that the rightful (kid) ruler is being suppressed by his aunt. But the young king likes Sunny's dyed eggs and jelly beans. So Kidsville, with the help of an old train engine, makes a few plans (and a decoy chocolate rabbit) to distribute them.
| Directing | Jules Bass | Director |
| Directing | Arthur Rankin, Jr. | Director |
| Sound | Maury Laws | Original Music Composer |
| Writing | Romeo Muller | Writer |
| Production | Arthur Rankin, Jr. | Producer |
| Production | Jules Bass | Producer |
| Production | Masaki Îzuka | Associate Producer |
| Sound | Tom Clark | Sound Effects |
| Sound | John Curcio | Sound Recordist |
| Sound | Dave Iveland | Sound Recordist |
| Art | Paul Coker Jr. | Production Design |
| Production | Masaki Îzuka | Production Supervisor |
| Sound | Maury Laws | Songs |
| Writing | Jules Bass | Lyricist |
