
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.

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Peter joins a helicopter team to conduct a census on Mexican wolves, then helps biologists relocate a wild lynx in the Cascades; in the Sierra Nevada, Peter and Dr. Rae protect bighorn sheep, and later study alligator conservation efforts in Georgia.
Peter and Dr. Rae visit Washington state, where conservationists work with beavers to restore spawning grounds for endangered salmon; they learn how native tribes relocate beavers from dangerous situations and help build artificial beaver dams.
Dr. Rae and Peter demystify a misunderstood canine, the wolf; Peter spots an endangered red wolf in the wild and helps with a health checkup for a new litter; Dr. Rae learns about gray wolves during a visit to Minnesota's Wildlife Science Center.
Peter and Dr. Rae embark on a mission to protect the endangered North Atlantic right whale; Peter joins the aerial patrol team tracking whales on their migration, while Dr. Rae visits the New England Aquarium to learn about the threats whales face.