本片根據英國兒童文學女作家伊麗莎白·古吉《古堡里的月亮公主》改編，配樂由Christian Henson擔綱。

　　13歲的孤女瑪麗亞和自己的家庭教師來到銀露村月亮坪莊園，投奔堂叔本杰明爵士。銀露村民風淳樸、美麗如畫，但又是一個充滿了種種神秘和懸念的謎一般的地方――庭園里到處是修剪成奇異的公雞和騎士形狀的紅豆杉樹，單身一人的本杰明爵士和他的小矮人廚師聲稱：20年來沒有女人踏進過月亮坪莊園宅子的大門。一條大得嚇人、怎么看都不像狗的大狗郎爾夫（它在出走了20年后突然又跑回了宅子），一只聰明神奇、會用爪子畫畫傳遞消息的黑貓扎卡拉，一片神秘莫測的黑松樹林，一匹亦真亦幻的小白馬，還有一段流傳了幾百年的關于月亮公主和小白馬的神秘往事……隱藏在這一切背后的，是兩個家族世代結下的怨仇。
如果你喜歡The Secret of Moonacre的專輯《電影原聲 - The Secret Of Moonacre(月亮坪的秘密)》里的歌曲，可以把下面的歌曲連接發給你的朋友:
1.Opening Titles - The Secret of Moonacre
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2.The Journey To Moonacre - The Secret of Moonacre
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3.Robin Attacks / Arrival At Moonacre - The Secret of Moonacre
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4.Into The Book - The Secret of Moonacre
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5.Marmaduke Scarlet - The Secret of Moonacre
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6.Maria's Room - The Secret of Moonacre
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7.Into The Forest - The Secret of Moonacre
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8.The Moonacre Curse - The Secret of Moonacre
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9.Milk And Cookies - The Secret of Moonacre
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10.Running From Moonacre / Loveday - The Secret of Moonacre
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11.The 5,000th Moon - The Secret of Moonacre
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12.''I'm Glad That You're Back'' - The Secret of Moonacre
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13.Maria Is Captured - The Secret of Moonacre
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14.The Two Moon Princesses - The Secret of Moonacre
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15.Maria Escapes - The Secret of Moonacre
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16.Apology Tango - The Secret of Moonacre
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17.Setting The Bait - The Secret of Moonacre
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18.The Search Begins - The Secret of Moonacre
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19.Robin And Wrolf Are Captured - The Secret of Moonacre
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20.Little White Horse Leads On / Chase Through The Forest - The Secret of Moonacre
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21.Back Where It All Began - The Secret of Moonacre
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22.Maria's Sacrifice - The Secret of Moonacre
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23.Sea Horses - The Secret of Moonacre
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24.Love Waltz - The Secret of Moonacre
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25.All's Well That End's Well - The Secret of Moonacre
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26.Stars (Featuring Skye) - The Secret of Moonacre
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