Middle-aged couple Josh (Ben Stiller) and Cornelia (Naomi Watts) find their world is turned upside-down when a disarming young couple - Jamie (Adam Driver) and Darby (Amanda Seyfried) - enters their lives.

As Josh and Cornelia begin to spend time with Jamie and Darby, they find the younger spirits inside of themselves, and soon begin to look at life, marriage and the world through younger eyes.