In 1950s France, Helene and Michel lead a simple, predictable life. Helene, a cheerful stay-at-home mom, and Michel, the proud head of the family, are content—until a freak accident with a new washing machine propels them into 2025. Now, Helene is a powerful bank executive, while Michel struggles with unemployment and depression. As their children grow up in a world dominated by technology, their marriage and world are turned upside down. Can they adapt to this new reality and find happiness again, or will they ever return to the past?

To save his job at the zoo, David agrees to a risky plan: he must bring back a mysterious package from South America. He ends up on a cruise ship with his ex, their son, and his clumsy, not-so-bright colleague Stéphane, who David uses to secretly transport the package for him. Everything goes wrong when Stéphane accidentally opens the package and sets free an adorable baby Marsupilami. This rare and prized creature quickly turns the trip into complete chaos. Amid the wacky adventure, David and his family rediscover the strength of their family ties.