Mouk and Chavapa are in the Sahara desert, they must give Zerda a charm bracelet to bring him luck in the dromedary race. On the way, they meet Aïcha, a young musician and Didi, her dromedary.
Mouk and Chavapa are in Crete. They help Cassandra's uncle to release baby fish into the sea. They learn how to read a nautical map and the basic signs used in diving.
