An inventor and his family try to raise funds to feed a giant monster named Daigoro so that he doesn't shrink. Meanwhile, a meteor lands into the sea bringing with it another giant monster named Goliath. Will Daigoro be able to stop Goliath?
| Actor | Role |
|---|---|
 Akiji KobayashiHitoshi Suzuki | Hitoshi Suzuki |
| SShinsuke MinamiGoro Kizawa | Goro Kizawa |
 Kazuya KosakaSaito, zookeeper | Saito, zookeeper |
| HHachiro MisumiGoro Hachi | Goro Hachi |
 Fusako AmachiYoshiko | Yoshiko |
| RReiko HitomiUmeko Onisawa | Umeko Onisawa |
 Tomonori YazakiTaro | Taro |