Bai Shuo, a white lion cub born with a coat of pure white fur, faces criticism from his own pride. His uncle, who has returned after a long absence with ambitions of his own, seizes their territory and imprisons Bai Shuo's family. Fortunately escaping, Bai Shuo wanders alone across the vast wilderness, enduring hunger and countless hardships. Along the way, he rescues a little squirrel and meets a wandering lioness. Together, they keep one another warm and overcome one challenge after another. Determined to grow stronger and rescue his family, the group sets off on a long journey north toward the legendary White Lion Valley.