A country called Back suddenly withdraws from the World Peace Union, and announces to its people a ban on invention and laughter. Astro and Dr. Ochanomizu visit the country to find out what is behind this dictatorial policy.
| Creator | Osamu Tezuka |
|---|---|
| Actor | Mari Shimizu, Kazue Tagami, Youko Mizugaki |
| Country | Japan |
| Production | Tezuka Productions |
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