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 Japan. They just bought a gift for the twins' birthday and take a break in the park before going to the post office. But the lady next to them picks up the wrong bag and leaves with their toys… Mouk and Chavapa have to do their best to try to find her and get the toys back...
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.