A dragon fish is stolen by Tetsu Tobiyama and biologist Thomas Earwing seeks its return. Poo is led to Natsuro after she worms her way into a top secret file at Delta headquarters for information.
| Actor | Role |
|---|---|
 Miyoko YoshimotoPoo Rinwon | Poo Rinwon |
 Tadanobu AsanoNatsuro | Natsuro |
| HHiroshi OhguchiTetsu Tobiyama | Tetsu Tobiyama |
 Hajime YamazakiDelivery Company Staff | Delivery Company Staff |
 Ken MitsuishiKiryu | Kiryu |
 Tomorowo TaguchiDelta Works Japan Sales Manager | Delta Works Japan Sales Manager |
| AAlan CasemoreThomas Erwing | Thomas Erwing |
| DDerrick HolmesBill | Bill |
| TTatsuya AoshimaTV Announcer | TV Announcer |
 Toshiya SakaiHead of Aida Detective Agency | Head of Aida Detective Agency |
| HHemi ItoDelta Works Japan Employee Kiryu's Boss | Delta Works Japan Employee Kiryu's Boss |
| MMaritate MaruTropical Fish Salesman | Tropical Fish Salesman |
| KKenji ObaWatanabe | Watanabe |
| YYohichi SugiuraMaeda | Maeda |
| TTsutomu TôdôKiller | Killer |
| AAkira YamaguchiKiller | Killer |