Mongolia's Altai Mountains are home to one of the world's most endangered animals, the snow leopard. The lives of these big cats are a mystery, but a team of conservationists and filmmakers are uncovering their secrets by following a female named Tenger and her two young cubs as they cover huge distances in purist of their prey. The cubs face a life and death struggle as they learn to navigate the perilous terrain and hunt for themselves. Revealed here are the dangers and drama of the breeding season as these normally reclusive animals come out of hiding and track each other down, and the tense relationship with the local nomads whose livestock often become the snow leopards' prey.