In 1848, ten-year-old Toozak, a Yupik Eskimo, sees a whale being born and is told by a shaman that he and his descendants must protect that whale, which Toozak names Siku, as long as it lives.

Fifteen-year-old half-Inuit Nick and his white brother, Ryan, meet and share an adventure on the Firth River in the Canadian Arctic, facing white water, wild animals, and fierce weather as Ryan documents the effects of climate change on caribou for National Geographic magazine.

Julie's decision to return home to her people is not an easy one. But after many months in the wilderness, living in harmony with the wolves that saved her life, she knows the time has come. Julie is not prepared, however, for all the changes that she finds. Her father has forsaken many of the old Eskimo traditions. He has given up his sled dogs for a snowmobile, and now look after the musk oxen that serve as the village's income. He will do anything...