1Les loups règnent (Hiver)
Following Yellowstone's wildlife in a fight to survive six freezing winter months.
2Se nourrir, se reproduir (Été)
As the snow melts, the extent of Yellowstone is revealed, but summer here is fickle.
3Un sanctuaire pour survivre (Automne)
Elk move down from the mountains and beavers repair their dams in preparation for winter.