Mouk and Chavapa are visiting their friend Tucson and his Mum, who is working in Utah. Her job is to make special resin casts - copies - of the dinosaur footprints. Chavapa, who is fascinated by dinosaurs, wants to see the resin casts. But Lucy, Tucson's lizard, escapes, and everybody sets off to look for her. How are they going to find her?
Mouk and Chavapa are in Madagascar. It's Christmas and so they have to call Popo and Mita. They have a "Challenge for best decoration". Before Mouk and Chavapa left for their trip, they'd agreed that they'd have to put up the best Christmas decorations, wherever they were in the world on the twenty fourth of December. But Chavapa is very upset because they don't really celebrate Christmas in Madagascar, and they don't have Christmas decorations... How are Mouk and Chavapa going to do to keep their promise?
Mouk and Chavapa are in America to visit their friend Tucson who lives in an earthship in the Arizonian desert. Mouk wants to give Sedona, Tucson's mother, a bunch of flowers, but without water, they wither very quickly. Tucson tells his friends there are roses in the desert, and they set out to find one. Tucson means desert roses, made of sand... But Mouk and Chavapa don't know what they're looking for, and when Chavapa tries to pick a cactus flower, he ends up with prickles everywhere!