Mary Lennox is orphaned in India and sent to live in her Uncle's manor on the Yorkshire moors. Cared for by the maid and housekeeper, the sad and lonely Mary befriends a robin who leads her through the gardens of Misselthwaite Manor. As she explores, Mary discovers a rusty old key to a magical garden which has been locked up for years. Misselthwaite Manor holds another mystery; Mary's sickly cousin Colin. Along with the Manor's gardener Dickon, the children regenerate the garden and as it blossoms so do the lives of Mary and Colin.