Mikado and Laetitia lead an alternative lifestyle aboard a van with their homeschooled children Nuage and Zephir. One day, their van breaks down, forcing them to lead a somewhat 'normal' life over summer.
In the summer of 1978, a teenager and his group of friends face new challenges when their neighborhood roller-skating rink closes, forcing them to visit a different rink.
Looking to adopt a child and unable to conceive a child of their own, the Morrisons' lives are turned upside down when a seven-year-old boy unexpectedly shows up on their doorstep.