这部电影讲述了一位单亲母亲夏天为了救自己被绑架的儿子。不断通过时光穿梭返回一小时50分钟之前的这个故事

单亲母亲夏天是一家物理研究所的研究员，最近研究的项目是一种穿越虫洞的技术，而且已经在研究所和该所长共同研究出了一种可以让生命体自由穿越在时空虫洞当中的时间旅行的高级技术，然而当研究逐步开始进行突破性进展的时候，自己的儿子却被一伙神秘的绑匪给绑架了，绑匪以他儿子的生命要挟，要求夏天将虫洞技术进行转让，为了挽救自己儿子的生命，夏天在实验室使用还没有通过实际验证的技术返回在一小时50之前，然而通过这件事情一来二去变得更加的复杂，在各种意想不到的突发情况下，夏天既要面对自己在时空旅行当中的变异和各种困难还需要应对自己身体对抗时控的压力，然而在穿越过程当中各种诡异的事情以及背后隐藏的事情也已经逐步开始凸显出来。

The film tells the story of a single mother, Xia Tian, who tries to save her kidnapped son. Keep going back to this story one hour and 50 minutes ago through time travel

Single mother Xia Tian is a researcher at a physics research institute, and her latest research project is a technology for traversing wormholes, and it has already been used in The research institute and the director jointly researched an advanced time travel technology that allows living organisms to freely travel through time and space wormholes. However, when the research gradually began to make breakthroughs, his son was killed by a group of mysterious The kidnapper was kidnapped. The kidnapper threatened his son's life and asked Xia Tian to transfer the wormhole technology. In order to save his son's life, Xia Tian used the technology that had not passed the actual verification in the laboratory to return before 50 hours. Through this incident, it became more and more complicated. In various unexpected situations, Xia Tian not only had to face the variation and various difficulties in his time travel, but also had to deal with the pressure of his body against time control. However, During the time travel process, all kinds of weird things and things hidden behind have gradually begun to come to the fore.