Marie Tremblaypierre gathers family and friends at the lake house. He wants to celebrate his 76th birthday even though he didn't want to do it quan he turned 70 or 75. For their children, Laura, Anne-Sophie, Hélène and JP, returning to the lake is to travel to the past, to childhood, to lloc on they learned to swim and were on free. It also means returning to the domains of her mother, a playwright with a lot of character who has not always been able to show her amor for her children.