Twenty years after the disappearance of her daughter, a recovering alcoholic is preparing to host her family's Christmas celebration when her estranged ex-bother-in-law arrives unannounced, bearing nostalgic gifts and a heavy secret.

一群青少年在加利福尼亚州的拉斯阿尔马斯（Las Almas），去了一个被遗弃的小屋，度过了一个愉快的夏季周末。20年前，一所高中班的孩子们被打死了。