The majestic Changbai Mountains stretch far away, hiding in a huge forest and on a plateau. It is a rich and sacred land that nourishes countless creatures, and the four seasons change and last forever. A squirrel-mom has three little pups that need to be fed. She gathers food for the winter in late autumn. When the cold winter comes, squirrel-mom stubbornly chases a pine cone, despite the blizzard, in the sake of her children. She faints because of the cold, and the Amur tiger notices her while on his watch. A warm spring breeze blows, everything comes to life once again. And little squirrels and their mom happily play in the forest.