玛丽是一个非常可怜的小姑娘，在一次地震中意外失去父母，而后玛丽被送到她亲戚也就是姨丈克克莱文勋爵所在的庄园里，庄园里有一个神秘的花园，当初克莱文的妻子就是从这个花园里面的秋千上，不小心掉下来摔死了，为此克莱文将那个为不详的花园，并且嘱咐要永久锁上花园的门，把钥匙藏在姨妈的柜子里。后来玛丽通过一只小鸟带领下找到了花园，并找到了钥匙打开了花园的大门。玛丽发现科林也就是克莱文的儿子，那个因病缠绕而自我封闭在房间中，玛丽不止一次从的偷偷的去看科林，后来，在玛丽和迪肯的陪伴下，科林开始做起轮椅去秘密的花园游玩，在玛丽的鼓励下，克林也终于克服了走路的恐惧，一次梦境中克莱文梦见妻子呼唤他，于是他赶快去了秘密花园，发现孩子们在玩捉迷藏，而他也和儿子重逢，玛丽也成为他家庭中重要的一员

Mary is a very poor little girl who accidentally lost her parents in an earthquake, and then Mary was sent to her relative, uncle Craven In the manor where the Lord lives, there is a mysterious garden in the manor. At the beginning, Kraven's wife accidentally fell from the swing in this garden and fell to her death. To order the garden gate to be permanently locked, and to hide the key in my aunt's cupboard. Later, Mary found the garden led by a bird, and found the key to open the gate of the garden. Mary found out that Colin was also Kraven's son, who was confined in the room due to illness. Mary secretly went to see Colin more than once. Later, accompanied by Mary and Dickon, Colin began to do With the encouragement of Mary, Klein finally overcame the fear of walking. Once in a dream, Kleven dreamed that his wife was calling him, so he hurried to the secret garden and found the children playing hide-and-seek , and he reunited with his son, and Mary became an important member of his family