女巫Gothel（唐纳·墨菲 Donna Murphy 配音）靠着一朵神奇的金色花朵保持青春。王后重病，国王派人找到了这朵金花给王后治病，王后病愈，生下了一个一头金发的小女孩Rapunzel（曼迪·摩尔 Mandy Moore 配音）。女巫失去金花，却发现小公主的金发有 着同样的魔力，因此她偷走Rapunzel，把她关到森林中的一座没有楼梯高塔之上。十八年后，Rapunzel在女巫的抚养下长成一个拥有长长金发的美人，她越发渴望外面的世界，女巫为了自己青春永驻，想方设法把Rapunzel留在身边。一天，窃贼Flynn（扎克瑞·莱维 Zachary Levi 配音）盗取公主王冠后逃入森林，在好奇心趋势下登上了这座神秘的高塔，误打误撞见到了塔中的长发公主。在Flynn的陪伴下，Rapunzel走下高塔，开始了人生和爱情的大冒险。本片为迪斯尼公司第50部动画长片，改编自经典格林童话《长发公主》，由迪士尼元老级画师格兰·基恩首次担任动画片导演。
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