Penned by Jean-Marie Chevret, Numéro Complémentaire is a story about an average French family comprising a mother, a father and their daughter. The family in question, the Leblanc family, gets lucky and wins the lottery and hence has a massive influx of money. The money could buy them almost everything and make all of their dreams come true except one. The play follows the Leblanc parents as they try to cross boundaries in order to make their daughter's dreams come true.