Kristin, a cynical 34-year-old, drinks a mysterious champagne on Christmas Eve and wakes up seventeen years in the past, sharing a room with her 17-year-old self. Given the chance to change the worst Christmas of her life, she attempts to fix past mistakes, only to discover surprising truths about her family that may help her mend her present-day relationships.

摩根是一位头脑非凡的单身妈妈，她非常规的探案秘诀让她与一位循规蹈矩但经验丰富的侦探建立了不寻常且势不可挡的合作伙伴关系。

一名酗酒成性的空中小姐卡珊德拉·鲍登宿醉之后，在泰国曼谷的一家酒店房间中醒来，发现一具男尸倒在床边。由于过度害怕，她没有报警，自欺欺人地假装没有事情发生，继续执行飞行任务，并对同事和联邦调查局探员撒谎。她完全记不起当夜发生了什么，开始怀疑是自己杀了他。影片改编自克里斯·博雅里安的同名小说。