Merel, a single midwife, is done with men, but her biological clock is ticking inexorably. And yes, she gets pregnant. However, the whole family suddenly seems pregnant. Her 60-plus father Piet has just become a father again with his young partner and her 23-year-old niece Eva is also expecting. Annet, Merel's older sister, who suffers from the empty nest syndrome, has a husband Theo who only wants to travel because he thinks is too young to become a grandfather.

The big end-of-term play is approaching. Tobias is somewhat anxious, but with Mees Kees at the helm, everything should be just fine. The class looks forward to rehearsing in the afternoons and to making beautiful scenery - until they find out that Principal Dreus has chosen a terribly boring medieval play. Moreover, it is to be staged in a dusty room within a nearby retirement home. But Mees Kees wouldn't be Mees Kees if he didn't put his own twist on things...

Casey is a student teacher who gets his very first placement in class 5b. He is not sure how to teach yet, but thankfully the children are more than willing to help him.