While on vacation with their bickering parents, young Eva and her little brother Johnny find in a polluted lake two strange friendly sentient octopuses made of strange material that attracts electricity. They take them as pets.
Dagmar Havlová Veškrnová
as Andrea
Pavel Zedníček
as Honza
Žaneta Fuchsová
as Eva
Milan Šimáček
as Honzík, syn Holanových
Miroslav Macháček
as George
Josef Bláha
as poručík
Přemysl Kočí
as Mefisto
Jaroslav Moučka
as Nekvasil
Vlastimil Brodský
as děda Holan
Boris Rösner
as Andreadis
Jan Kanyza
as asistent Pierre
Kateřina Lojdová
as Eliška
