讲述了埃莉安的冒险故事：埃莉安是伦布里亚统治者的小女儿，在父母被神秘咒语变成怪物后，坚韧不拔的她必须勇敢地踏上征程，去拯救她的家人和王国。

　　本片基于艾米·利普罗特所著回忆录，她和芬沙伊德改编剧本，讲述刚从康复中心出来的罗娜在离开十多年后，回到了苏格兰的奥克尼群岛，回到童年时的牧羊场，再度体会到了自然之美和静谧的珍贵。

　　The film centers on the Herdman kids, who are the absolute worst. They lie, they steal, they bully… and they’ve hijacked the town Christmas pageant. As the rowdy and raucous siblings force themselves into all of the lead roles, they drive the pageant’s director, Grace (Judy Greer), and other members of her family, including husband Bob (Holmes), up the wall. But through their misfit mischief, these unlikely messengers might turn out to be the ones to deliver the town’s sensational and moving portrayal of the true meaning of Christmas.

　　女演员Laura Franco（梅丽莎·巴雷拉 Melissa Barrera 饰）被男朋友甩掉后心碎消沉、怀疑自我，此时，她在自家衣柜里碰上了住在那里的一个可怕又古怪、迷人的怪物（汤米·杜威 Tommy Dewey 饰）。