Anna, a young girl as daring as she is optimistic, embarks on an incredible journey in the company of Kristoff, an experienced mountaineer, and her faithful reindeer, Sven in search of her sister, Elsa, the Snow Queen who dived the kingdom of Arendelle in an eternal winter ... Along the way, they will meet mysterious trolls and a funny snowman named Olaf, brave the extreme conditions of the craggy and icy peaks, and face the magic that awaits them with every step .