Paula and Philipp want to get to the bottom of the crop circles and go at night to investigate. But what they find doesn't appear to be the work of aliens. The owner of the field with the mysterious circles is charging tourists 5 euros to take pictures of it. Meanwhile, Philipp and Paula camp out in the forest at night to wait for UFOs. Instead, two men turn up with a machine. Did they make the crop circles to attract tourists? In the end, a UFO does seem to turn up, which adds more confusion to the mix. The versatile verb "machen" is less confusing than the events in the corn field. In this episode, the professor shows you numerous ways to use the word.