When single career girl Jo-Jo steps onto a zebra crossing and gets hit by a car, she awakens to find herself in 1963. The fashion, the music, her job, even her romantic life: everything is different. And then it happens three more times, and Jo-Jo finds herself living a completely new life in the 1970s, 80s, and 90s. The only people she can rely on are Harry and Ellie, two companions from 2013, and George, the owner of a second-hand record store. If she's ever to return from her travels, Jo-Jo must work out why she's jumping through time like this. And if she does make it back, will her old life ever be the same again?