Alpha's been raised along scientific principles, and will make Mike Regan a great human interest story for his paper. But when his interview prompts Alpha to run away from the institute and ask him to show her some magic, Mike gets more responsibility than he bargained for. Especially since another story of his, one involving gangsters, has also come home to roost.

年仅10岁的玛丽（Margaret O'Brien饰），在父母去世之后，远渡重洋到英国投靠舅舅。这个寂寞又孤僻的小女孩，在无疑中发现了一个深锁了10年的秘密，荒废的花园却因此变成美丽的花园……