After San Francisco suffers a week of terror at the hands of a serial killer ending with the
death of Laura Price’s eight-year-old daughter Serena, Laura falls into a dark depression
and attempts suicide. Next thing she knows, she’s waking up before that week, whereupon she
teams up with ex-police detective Nico Jackson (who also got thrown back in time), hoping to
change the week, catch the killer, save Nico’s brother’s life, and save Serena—all in a
mere nine additional episodes.
— Michael Main