The struggle for the survival of the stranded narwhal on the shore will reveal more about the history of these extraordinary inhabitants of the world's oceans. Narwhals, living in the planet's oceans, try to survive and adapt to a dynamic world. These marine creatures are vital to the environment: by helping to reduce pollution, they contribute to the fight against climate change. Inspired by Heathcote William's bestselling book, the documentary film "The Great Guardians of the Planet" takes us on a journey of discovery through unexplored territories and an unfamiliar whale society, characterized by extraordinary abilities and an incredibly rich and complex social life.