In a snowy land, a gentle white mammoth named Woolly lives in solitude. One day, he hears cries and finds two lost mammoth calves, Mila and Max, separated from their mother in a blizzard. Woolly promises to help them and guides them through the icy wilderness.

As they travel, Woolly's stories and protection comfort the calves. They face various challenges and meet Arctic creatures, growing closer along the way. Eventually, they find the calves' mother and reunite her with Mila and Max.

Grateful for Woolly's help, the family embraces him. Woolly finds a new purpose and becomes a guardian of the snowy wilderness.