«Where, you tend a rose, my lad, A thistle cannot grow» 

Orphaned and sent to live with her uncle in his austere manor on the moors, Mary Lennox is a lonely and unhappy child. A meeting with Dickon, her servant's brother begins her adventure and it is through their friendship and her relationship with her troubled hypochondriac cousin Colin that she begins to learn about herself. Their lives all begin to change when a Robin shows Mary the door to a mysterious secret garden.