On the run as fugitives, the team flies to Zambia to gather leopard DNA in order to manufacture a cure for the abnormal behavior that's affecting animals worldwide. When it's time to leave, they need to reach out to animal rights activist Ray Endicott to get safe passage out of the country. Also, Chloe makes the ultimate sacrifice to avoid further bloodshed.
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.