خلاصه داستان : مهاجرت بزرگ بینندگان را به سفرهای حماسی می برد که حیوانات برای اطمینان از بقای گونه خود انجام می دهند.

Shot from land and air, in trees and cliff-blinds, on ice floes and underwater, this documentary tells the powerful stories of many of the planet's species and their movements, while revealing new scientific insights with breathtaking high-definition clarity and emotional impact. The beauty of these stories is underscored by a new focus into these species; fragile existence and their life-and-death quest for survival in an ever-changing world.