Bertie and Kate have been best friends since high school. Bertie is a semi-failed cartoonist, working for a prominent Silicon Valley tech firm. Her job depresses her, but not as much as the fact that Kate has recently decided to move to Los Angeles. When Bertie’s attempts to make Kate stay fail, she suggests the next best thing: a trip to Paris that will hopefully distract the duo from their upcoming separation. One night in Paris, they meet a strange man in a bar who offers them a private tour of the Louvre. The women find themselves alone in the museum, where nothing is quite as it seems. Caught up in a day that keeps repeating itself, Bertie and Kate are eventually separated, and Bertie is faced with a mystery that threatens to derail everything.

In the 1920s, Zoya Andropova, a young refugee from the Soviet Union, finds herself in the alien landscape of an elite all-girls New Jersey boarding school. Having lost her family, her home and her sense of purpose, Zoya must now endure the malice her peers heap on scholarship students and her new country's paranoia about Russian spies. With the arrival of visiting writer and fellow Russian émigré Leo Orlov --- whose books Zoya has privately obsessed over for years --- her luck seems poised to change. But the relationship that forms between them will put Zoya, Leo and his calculating wife, Vera, all at risk.