小三人生：只要和你在一起

影片改编自朝仓霞同名小说，讲述了35年后重逢的中学同学青砥健（堺雅人 饰）和须藤叶子（井川遥 饰），彼此都是单身，积累了各种各样人生经验的两人意气相投，填补了自中学以来离别的35年时光，心灵相通的故事。

　　After a mysterious accident at a research camp on the Isle of Gran Manan, a CEO hires a team of blue-collar mercenaries to extract his daughter, a scientist working at the camp. Upon arrival, the team soon learns that not only is the island surrounded by a wormhole that causes time to reset every three days, but it's also crawling with hideous monsters. As they learn more about the nature of time, space, and the creatures on the island, they quickly realize that death may be the easiest way to escape the island.

　　乔万娜低调平凡，每天周旋于政府部门的会计工作、女儿的学校活动。在无趣的外表下，其实是一名执行各种国际危险任务的特务。某天高中同学聚会，发现所有同学都跟她一样，每天都有鸟事跟烦恼。这让她下定决心，接下来的任务要帮助身边所爱的人。透过浮夸的伪装、经历爆笑的情况，她要扭转人生，为朋友带来正义！