PB3 and Robin land on Earth to escape the terrible OOs who are chasing them in another spaceship.
They are very surprised to find some beautiful creatures. They are soft and have got wings and black and yellow stripes. They are bees! Some Earth children are telling them all about the importance of bees when they hear the roar of a tractor. An ecological disaster is about to happen.—Approximate age: 5–7 years old