The Rocky Mountains are the second largest mountain range on Earth - 4,800 kilometers in length from the American Southwest to the Canadian Arctic. An ever-expanding population is placing increased pressure on wilderness, making the Rockies one of the last refuges for North America’s most iconic species, including Rocky mountain bighorn sheep, Greater sandhill cranes, grizzly bears and American bison. In this film we introduce the vast diversity of the Rockies through the eyes of our animal families. From early spring to late summer we follow our new mothers through the early days of raising a family. With every step our youngsters take there are lessons to learn, lessons that will determine their survival as adults.