One Christmas Evening, a lonely rich man wanders the illuminated streets of festive Paris. On the Butte, he meets by chance a black man, Melchior, a small electrician by trade, who is also lonely. Looking out over the night-time panorama of the city, the two men unconsciously await Adventure. It comes in the form of a strange luminous star carried by an old sandwich man. In spite of themselves, the two companions let the Star lead them into a darker, quieter and more secretive Paris, where the last loner, Mr Gaspard, a modest pharmacist, completes the trio. In the Rue de l’Évangile, a strange setting of canals and gasometers, l’Étoile has just disappeared in front of a dingy, sinister bistro. Here, however, the real miracle is about to happen. At midnight, in a squalid bedroom, a child is born to two illegal refugees. For once, Herod will allow himself to be touched. The three Magi will renew the legend of the gifts to the Child, just as they did on a certain night in Bethlehem, a long time ago.