Bytte Bytte Barn plot
The children of the two couples, Cecilie and Andreas, and Liv and Malte, are now two years old. The families still keep in touch, but live completely different lives. During a medical examination, it becomes clear that the fertility clinic did not swap their eggs after all. After the initial shock has subsided, the two families decide to live together as a collective in Andreas and Cecilie's home, so that both parents can be with both children every day. But soon the very different views of the two couples on lifestyle, interior design, eating habits and parenting methods become apparent, and the two families struggle to live under the same roof.