Mouk and Chavapa travel by bus in the outback with Sidney, his father and two other passengers: Nina and her grand-mother. Unfortunately, the bus breaks down and there no water left in the radiator. Luckily, they find a watermill and try to repair it.
Mouk and Chavapa are in the Andes. While they are running some errands, the bus leaves with their bikes attached to it! Api is going to help them catch up with the bus… by mule.
Mouk and Chavapa are in Argentina, where they meet Chaco. Chaco is a cowboy, or a "gaucho", as they're called in Argentina. His job is to gather up his herd and take his cows back to his ranch. Mouk and Chavapa offer him to give him a hand, but they will soon find out that herding cows isn’t as easy as they think.
