Between Bacchus, the love of aborted youth who unexpectedly reappears and Martial, her ex whom she can't divorce and who happily takes root at home, Maud does not put much on her sentimental life. Also in need of professional recognition, she will miraculously win the colossal project to renovate the square in front of Notre-Dame, the great ambition of the Mayor of Paris, which should make her a star of contemporary architecture. Alas, nothing goes as planned for Maud, who goes from misadventures to disillusions. Under the benevolent leadership of Didier, her architect colleague, and Coco, her eternal big single sister who has returned from everything, she will have to redefine the contours of her life and learn to impose herself.