
Animal expert Peter Gros and wildlife ecologist Dr. Rae Wynn-Grant highlight species under threat of extinction in the modern world and share the work of caring and compassionate conservationists, including scientists, wildlife experts and even members of the public. Gros and Wynn-Grant travel the country to explore how human activity impacts animal behavior and share how modern science, technology and other conservation techniques can help save North America's imperiled wildlife, one species at a time.

Dr. Rae teams up with conservationists in Costa Rica's Tapir Valley to save the Central American tapir and restore its habitat; Peter then visits a Texas zoo where a young tapir's development provides insights for protecting the species in the wild.

Peter and Dr. Rae explore an issue that hits close to home -- protecting urban wildlife whose natural habitat puts them in conflict with humans, often in harm's way; Peter learns the story of P-22, a Los Angeles mountain lion.

Peter and Dr. Rae meet real-life superheroes of science who are developing cutting-edge tools for protecting the wild. Dr. Rae visits a California marine laboratory growing an army of giant sea stars to try to save the giant kelp forests.