On a sultry summer night in Paris, two women meet in line at an ice cream kiosk on the Ile de la Cité. One is tall, fair and striking, with an indeterminate accent. The other, a troubled American TV star, is hiding her beauty and identity under a shapeless sweatshirt, wearing sunglasses even in the darkness. When leering male tourists hassle the pair, the blonde pulls out a knife and a sisterhood is born. Both women have been victims of male violence, and both are warriors --- one trained and calculating, one instinctually ferocious. They each think they know who they are dealing with. But both are very, very wrong.

Donny is a baby genius whose play for fortune is an algorithm that may allow people access to their "multiverses" --- all the planes on which their alternative life choices can be played out simultaneously --- to see how the decisions they’ve made have shaped their lives. He chooses Amy Reed to be his guinea pig. Amy’s husband, Dan, accepts a dare of his own, accompanying a seductive, award-winning photographer named Maryam on a trip to Fukushima, the Japanese city devastated by tsunami and meltdown. But when crisis hits at home, the extent of Dan’s betrayal is exposed. As Amy contemplates alternative lives, the couple must confront whether or not the distances between them in the here and now are irreconcilable.

The events of a single night shatter a family's sense of security and identity in this provocative and deeply affecting domestic drama --- a brilliantly observed portrait of modern life and the underlying truths we take for granted.