Director Michael Apted returns to interview this group of people 7 years later. They are 28 now, and things keep changing. We are now further and further away from the social studies aspects of the original idea. These are great stories about real people. The phrase that you can't make this up is really coming true here. There are still questions about school, about money, about class system, but they are almost distractions now. These people are not just about the stereotypes although some do try very hard.
Neil is now fully gone into the wilds and alone. Suzy has finally found happiness and it's obvious now how miserable she was in the first 3 films. Everybody else is changing in their lives in different ways. Charles has dropped out of the series all together. The series is getting more and more fascinating.