When mysterious circles are discovered in a corn field, Paula and Philipp go to investigate. Did a UFO land here, or is somebody trying to pull a prank? As Ayhan arrives at the Radio D office, Paula and Philipp are rushing out. Enigmatic circles have been discovered in a corn field and no one can explain how they got there. The two journalists aren't the only ones interested in the unusual attraction; many tourists come to check it out as well. The residents of the village soon find ways to profit from the mysterious event. In the turmoil, many people with different interests come together. The tourists want to satisfy their curiosity, the journalists want to solve the mystery and the farmers apparently want to make money. Take a closer look at modal verbs in this episode.