Hey There!
Here is a summery : Mary Lennox is a nine-year-old British girl growing up in colonial India in the care of a sequence of nannies. Since her father is an officer in the British army and her mom is super-busy with the vital business of dinner parties and nice clothes, Mary barely knows her own parents. And since she spends all of her time alone, she's selfish, demanding, and self-absorbed. Her parents die suddenly of cholera, leaving her in the care of her mother's brother, Archibald Craven.
Mary's uncle doesn't care much about her, so he brings her to his huge mansion in England, Misselthwaite Manor, and basically leaves her there, more or less on her own. Mary's maid Martha is a cheerful Yorkshire woman who won't stand for Mary's spoiled tantrums and fits. She tells Mary all about two things that change Mary's life: (1) There is a walled garden on the grounds that has been sealed off since the death of Archibald Craven's wife ten years before; and (2) Martha has a little brother named Dickon who loves gardening and wild things.
Of course, Mary discovers the walled garden (since the title of this book is The Secret Garden). With the help of a local robin (this isn't Mary Poppins, so the robin doesn't actually talk, but it's smarter than your average bird), Mary stumbles on the long-lost key to the garden and opens it up.
Hopes this Helps u :)