After losing her parents, Heidi finds herself under the care of her grumpy grandfather, Öhi, who resides in the majestic Alps. Though he reluctantly agrees to take her in, his bitterness is palpable. However, Heidi's gentle nature might just melt Öhi's hardened heart. Together with Peter, the goat herder, and Klara, who is confined to a wheelchair, Heidi embarks on a series of exciting adventures that could change their lives forever.