Kelly, a hopeless romantic in Montana eager to finish her dissertation, and her father, Hank, a rancher, receive news that he has inherited an estate from a faraway land. When they travel there, they discover that Hank has not only inherited the estate, but the title that goes along with it – KING!

A bestselling novelist and an aspiring writer join forces to solve her friend's murder, forming an unexpected partnership as they search for the killer.

莉齐从小失去了父亲，母亲带着她和姐姐梅根长大，一家人的传统就是在圣诞节当天围在家中的火炉旁享受这一美好的时刻，多年来这一传统从未改变。圣诞将至，梅根因工作需要接触到马利家族的遗产继承人罗伯特，他需要尽快找到买主来处理掉祖上在阿什福德的大房子，梅根是这笔生意的经理人。罗伯特告诉梅根需要一个房屋看护人，直到房子交易当天，都需要在阿什福德的别墅中看守房屋，梅根想到了自己刚刚失业的妹妹莉齐。莉齐来到阿什福德的别墅，这里的一切都显得与她格格不入，她慢慢发现，马利家族中的祖母皮帕并不想卖掉房子，这里承载着家族许多记忆，因此，她与外孙罗伯特产生分歧，莉齐决定在家中别墅里举办圣诞派对，在得到罗伯特同意之后开始准备。