Paul and Sheryl sail to Pantelleria, a tiny volcanic island in the Sicilian Channel close to the North African coast. They arrive in time for the annual grape harvest and learn to make wine in the traditional way, dive on a Byzantine shipwreck with a group of archeologists, and while hiking around the island discover that the volcanic activity makes it a natural health spa. They have a sauna in a cave, relax in hot thermal pools by the sea and restore their energy in a mineral-rich mud bath in the Lake of Venus.