Alice, a sociology researcher, finds out she is pregnant. Luc, her husband, is thrilled. It’s a boy! They will name him Ulysse. But by the age of one, Ulysse is no longer within normal growth ranges – too small, too thin. Doctors are concerned, and the diagnosis is confirmed: a genetic condition. Ulysses will be different. But how different? No one can say. Thus begins Ulysse’s singular odyssey: to walk, to speak, to learn, to understand, to grow. Alice sets out on this journey, determined that Ulysse will find his place in the world.