The film is about Koro the puppy, who runs away from his mistress, experiences some adventures around town and who is finally happily returned home.
| Actor | Role |
|---|---|
| IItsuki KomazawaSawako (voice) | Sawako (voice) |
| HHaruyo MoriyoshiMother (voice) | Mother (voice) |
 Kenji ImuraFather (voice) | Father (voice) |
| AAkiko KitajimaArt student (voice) | Art student (voice) |
 Shigeru MoritaPlumber (voice) | Plumber (voice) |