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.