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!
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 Peru to see the Nazca drawings... They get there too late and miss the plane which flies over the drawings. Mouk is very disappointed, he had a dream about the drawings the night before and was very eager to see them... Flora, Mouk and Chavapa's new friend, sees how sad Mouk is and tells the friends she knows where they can see the drawings...