With Jackson missing, Mitch and Abraham race to find him before General Davies and the International Animal Defense Group can locate him and prevent the team from making a cure. Also, Jamie, Dariela and Allison make a last-ditch effort to convince the Russian government to drop out of the Noah Objective.
Zoo is set amidst a wave of unhappy animal attacks sweeping across the planet. A young renegade scientist is thrust into a race to unlock the mystery behind this pandemic before time runs out for animals and humans alike.