When spirited eight-year-old Heidi finds and rescues an injured lynx cub from a trap, she names him Pepper and secretly nurses him back to health. But as the cub's playful antics draw unwanted attention, Heidi learns of industrial plans that threaten not just the cub, but the entire Alpine ecosystem. As Heidi embarks on a daring journey to return Pepper to his family, she learns that true belonging means protecting both family, and the wild places they call home.