A woman scientist, Holly Turner inherits a time machine from her father. It allows short trips into the past. To make the show interesting their are rules about time travel paradoxes. The trips are unpreditable in length usually a few hours. The machines is constantly needs expensive replacement parts. The reason that she works for the police department is to have a source of income for her research in time travel. In the first episode she forms a partnership with another police officer. They use the machine to help solve cases. The show is cute but not great. I find some of the plots rehashed from other shows. It is worth watching their are much worse show out there.