It takes Frédéric by surprise at the age of 40: he suddenly feels a strong desire to have a baby, while Claire has always been firm in her decision to not have children, and they had both agreed on this. Despite their understanding, Frédéric crosses a line by secretly bringing a child into the world. As a result, Claire undergoes a significant physical transformation, feeling like a whale, while Frédéric embraces his newfound role as a loving and caring father.