In October 1989, triplet babies are born into chaos in a Swedish hospital. Over two decades later, the siblings are scattered around the world, barely speaking. Sebastian is in London working for a mysterious scientific organisation and falling in love. Clara has travelled to Easter Island to join a doomsday cult. And the third triplet, Matilda, is in Sweden, practising being a stepmother. Then something happens that forces them to reunite. Their mother calls with worrying news: their father has gone missing and she has something to tell them, a twenty-five year secret that will change all their lives...