Jonah believes that going back to kindergarten like his sister Lena is much more fun than going to school, but he soon realizes that kindergarten is full of snotty babies who just cry and take his toys.
Then, he tries to work like mom and dad because he's convinced they have more fun than him, but it turns out they have a lot of responsibilities and do a lot of boring things...
At the end of such a busy day, Jonah is very tired. Maybe school isn't so bad after all...