2019. When David takes a job in London, Anna is left alone in their Paris apartment. It’s August and the city is deserted but when Clémentine moves into the building, Anna finds herself drawn inextricably into the younger woman’s world…

1972. Florence is finishing her degree in psychology and contemplating pregnancy. But Henry isn’t sure he’s ready for fatherhood and both have distractions outside their marriage…

As the two couples face the challenges of marriage and fidelity, the characters and their ghosts bump into and weave around each other, not knowing that they once all inhabited the same space.