Gu Xiaojiao, a young girl from2018, and Lu Ming, a man from1999, discover that they have both awoken in the same bed at the same time in the same space-time. Surprisingly, they discover that they can travel through time simply by exiting the bedroom door. The fun begins when they begin plotting improvements to these two eras. They are unaware, however, that their fate is in the hands of a strange individual.