A doctor kills his girlfriend when he accidentally causes her to fall onto an ornamental flower which has metal spikes. He disposes of her by chopping up and then dissolving her corpse. The woman's sister accuses the doctor and an investigation begins. In the meantime, a second woman is killed and the doctor begins to receive metal petals through the post.
Three technicians working in an underground laboratory discover that a nuclear war has destroyed most of the aboveground world. After a brief search for food, the trio find that gangs of murderous mutants want them for their next meal. Will the scientists be able to find other uncontaminated humans to rebuild civilization with, or will they all end up as mutant chow?
Italian drama written and directed by Brunello Rondi.
