A poor writer discovers that a species of rats has banded together to impersonate humans and supplant them unnoticed, in a manner reminiscent of the transformations in Eugene Ionesco's Rhinoceros, or the covert conspiracy of pod-people in The Invasion of the Body Snatchers. This film's story is based on a book by the Soviet writer Alexander Grin.
| Actor | Role |
|---|---|
 Ivica VidovićIvan Gajski | Ivan Gajski |
 Mirjana MajurecSonja Bošković | Sonja Bošković |
 Relja BašićIzbavitelj / Gradonačelnik | Izbavitelj / Gradonačelnik |
 Fabijan ŠovagovićProfesor Martin Bošković | Profesor Martin Bošković |
| IIlija IvezićŠef policije | Šef policije |
 Branko ŠpoljarRupčić | Rupčić |
| PPetar DobrićMeštar ceremonije na štakorskoj zabavi | Meštar ceremonije na štakorskoj zabavi |
 Edo PeročevićPolicajac | Policajac |
| AAna HercigonjaProdavačica dječjih kapica | Prodavačica dječjih kapica |
 Zvonimir FerenčićNakladnik | Nakladnik |
| BBoris FestiniApotekar | Apotekar |
| ZZdenka TrachGazdarica | Gazdarica |
| MMirko BomanDjelatnik gradske čistoće | Djelatnik gradske čistoće |
| FFahro KonjhodžićViolinist | Violinist |
| JJovan StefanovićPolicajac | Policajac |