"The Secret Garden" is a novel by Frances Hodgson Burnett that tells the story of a young girl named Mary Lennox. After being orphaned, she is sent to live with her uncle in a large, mysterious mansion in England. There, she discovers a hidden, neglected garden that has been locked away for years. As Mary begins to tend to the garden, she meets new friends, including Dickon, a boy who understands nature, and Colin, her sickly cousin. Through their adventures in the garden, they all experience personal growth, healing, and the transformative power of friendship and nature.