A city at the edge of a nervous breakdown: Frankfurt in the 80s functions as the setting for a furious horror film – grey concrete, grey sky, drugs. The subterranean water is contaminated by narcotics and makes the animals at the zoo go wild. Mutated to horrific beasts, they scare the city. But not only the zoo animals are affected...

When humans push nature to its absolute limits, then nature fights back relentlessly, becomes unnatural and violent itself – that is the message the film wants to convey.
Belve Feroci is a wild mixture: Italian horror film, radical ecological thriller and a glimpse of Germany in the 80s. A real rarity.