If there are two of you, and just one life - who gets to live it? Discover the international million-copy bestseller and profoundly brilliant 2020 Prix Goncourt winner

When flight Air France 006 enters a terrifying storm, the plane - inexplicably - duplicates. For every passenger on board, there are now two.

Just one thing sets them apart. One plane leaves the storm in March. The other doesn't land until June. For world leaders, the emergence of the June flight raises serious alarms. No science, faith, or protocol can explain this unprecedented event.

But for the passengers, a bigger question is at stake. What happens to them, now that their life is shared?
And as the doubles prepare to meet, only one thing is certain- life as they know it, will never be the same.