In a secret Biosafety Level-4 research lab in Austin, Texas, Dr. Philip Burris is genetically modifying mosquitoes to passively inoculate humans against malaria in a large-scale vaccination trial. Using cutting-edge CRISPR technology, the mutated mosquitoes are designed to glow green when infected, but now are behaving with unusual aggression. When a young research assistant goes missing, his friend and co-worker Jen McRae suspects a more sinister plan behind her company's noble work. Unexpectedly joining forces with two scientists from Canada and Malaysia, Jen leads the unlikely trio in a race against time to uncover the truth behind a bioterrorism plot that endangers millions, even while realizing that the biggest danger is to themselves.