André Gachet spends more than 70 hours a month in the sky aboard his little white Piper. Vincent accompanies him as they land at Payerne aerodrome to meet serial sound barrier breaker, Marie-Francoise, pilot of the Mirage 3 for over 75 years. In La Chaux de Fonds, they discover how the most expensive watches in the world are made, and in Broc, at the most famous of Swiss chocolateries, Vincent uncovers the mysterious secret behind their milk chocolate.