It’s night. Sally is having dinner with her uncle, Coco the clown, Suddenly something lands on the roof of Coco’s caravan! OH! It’s a spaceship! PB3 and his robot, Robin come down the stairs of the spaceship. They are very surprised. On Planet P3 they don’t have animals, or caravans. Coco and Sally invite PB3 and Robin to visit the circus.

PB3 a jeho robot sa tešia do cirkusu! Slony a žongléri a akrobati a klauni! Spolu so Sally idú na čaj ku klaunovi Cocovi priamo do jeho obytného automobilu, navštívia cirkusovú školu a nakoniec aj šapito. To ešte netušili, že najlepšie ich ešte len čaká!