Mouk and Chavapa are passing through the region of Tassili where they meet Dalila, a young girl whose parents are archaeologists. They decide to help the family with the dig.
Mouk and Chavapa are in the Atacama Desert in Chile. As they help their friend Pepito repair a leak, they discover the clever cloud-catcher system which provides water for people living in the desert.
Mouk and Chavapa are in Venezuela. Chavapa gets a flat tyre in the middle of the rainforest. Alouatta, a friendly man they meet, offers them to take them to the next village in his boat. But much to Mouk and Chavapa's surprise, there are crocodiles in the river…
