We take Livia, 5 years old, moves to another neighbourhood with older brother, parents and grandmother. Since the building they are moving in is a new one, there are many other families in the same situation. This is where we find Bobo, 6 years old, moving in with older brother, parents and being looked after by grandmother. We know that at these young ages girls and boys are not really interested in each other unless they both like to play hide-and-seek or Monopoly. But since the grandmothers are in the same situation (i.e. looking after grandkids), they start talking to each other and exchanging experiences on raising the little brats. Oh, forgot to mention that our characters' apartments are identical, just on two different consecutive floors.