Xia Xia is a single mother and also a senior researcher of the Institute of Physics. She has been committed to studying particle technology that can return to the past for many years. One day whenbaoshu8.com the research is about to succeed, Xia Xia found that her son Doudou was kidnapped by the mysterious kidnapper Cui Hu. Cui Hu threatened Doudou's life to hand over particle technology in summer. In order to save Doudou's life, Xia Xia ventured to use the unfinished particle technology to return an hour and 50 minutes ago, which made things more complicated, The story behind Cui Hu's story also gradually surfaced.