In 1838 England, spinster mathematician Winifred Blackburn helps her inventor brother build a time machine as an instrument of good for science, only to discover his diabolical plan for using it to manipulate history. To stop him, she steals the device. But when her heist goes wrong, she uses the time machine to avoid capture—and accidentally leaps to the year 2030.
Meanwhile, in 2030 America, Julie "Queen of All Geeks" Sherman enjoys a lucrative job, an adorable cat, and a treasure trove of comic book collectibles, but finding the love of her life is the one achievement she hasn't been able to unlock. What good is her golden nest egg if she can't share it with anyone?
One fateful day at a comic con, Julie encounters a disoriented Winifred and helps her recover. The situation takes a wild turn when Winifred proves she's a genuine time traveler.
This time-crossed couple wins the romance jackpot, but danger threatens their happily ever after when a mysterious intruder appears, bent on stealing the time machine at all costs. To help Winifred escape back to Victorian London, Julie has to act fast—even if it means losing the woman of her dreams.