Tom, 26 (Alyosha Schneider) and his sister Mia, 22 (Megan Northam), are the children of Xavier (Romain Duris) and Wendy (Kelly Reilly). When their grandfather dies, they inherit a building in Athens. Tom, a young startup trained in New York, joins his sister in Greece to manage the family estate. He finds out that Mia, who pretends to be an Erasmus student, is in fact a rebel activist who lies to the whole family. But their differences of opinion and lifestyle will make the sharing of the inheritance very complicated. They will find themselves (like their parents 25 years earlier) living with young people from all over Europe. It is this collective life that will finally help them to get closer...