After tragedy leaves Mary Lennox orphaned, the bratty ten-year-old British girl is sent from her home in India to Yorkshire, to live with Archibald Craven, a distant uncle whom she has never met.

At first, life in the isolated Misselthwaite Manor is as cold and desolate as the bleak moor outside her window. Then Mary learns the story of the late Mrs. Craven, the estate’s mistress, who spent hours in a walled garden tending to her roses. Mrs. Craven died after an accident in the garden, and her forlorn husband forbid anyone to enter it again, locking it and burying the key. The tale piques Mary’s curiosity and inspires her to find this secret garden, a search that introduces her to new friends, including a robin redbreast; Dickson, a twelve-year-old boy with a kindness to animals; and Colin, her secluded sickly first-cousin. Spending time in the garden transforms Mary and Colin and ultimately, life at Misselthwaite Manor itself.