Félix Mandel, an internationally renowned astrophysicist, is married with a four-year-old son and often has his head in the clouds. One day, he gets a strange and upsetting phone call: his father's voice echoes down the receiver. But his father has been dead for two years! Is it some kind of joke, or is there indeed a path, a secret link? From then on, Félix's life becomes a chain of misadventures, for better and for worse. He loses his wife, work and home. However, guided by this voice, badgered by this 'star', he will at last find the path to happiness.