February 29th is a date that comes into existence just once every four years. It is also the birthday of Tha s--author Anne-Dauphine Julliand's darling daughter--who died of a genetic disease. Tha s lived just shy of her fourth birthday. She had a short life but good one. As this special day is about to reappear on her calendar for the first time since her daughter passed away, Anne-Dauphine struggles with how to mark this momentous occasion...