A deadly disease spread by cockroaches in Manhattan is killing children. To combat the epidemic, an entomologist develops a mutant insect that produces a toxin to kill the roaches. The mutant breed was designed to die out after one generation, but it unexpectedly survives and evolves into a terrifying, humanoid monster.

Mimic
A genetically modified insect species, created to fight a deadly disease, has evolved to feed on human flesh, presenting a catastrophic threat to humanity.