In the near future, a civil servant is offered the salary of her dreams and is, shortly afterward, told what project she’ll be working on. A recently established government ministry is gathering “expats” from across history to establish whether time travel is feasible—for the body, but also for the fabric of space-time.

She is tasked with working as a “bridge”: living with, assisting, and monitoring the expat known as “1847” or Commander Graham Gore. As far as history is concerned, Commander Gore died on Sir John Franklin’s doomed 1845 expedition to the Arctic, so he’s a little disoriented to be living with an unmarried woman who regularly shows her calves, surrounded by outlandish concepts such as “washing machine,” “Spotify,” and “the collapse of the British Empire.” But he adjusts quickly; he is, after all, an explorer by trade. Soon, what the bridge initially thought would be, at best, a seriously uncomfortable housemate dynamic, evolves into something much more. Over the course of an unprecedented year, Gore and the bridge fall haphazardly, fervently in love, with consequences they never could have imagined.