A field mouse discovers a robin's egg has rolled from the top of a big rock, and it is determined to roll the egg back to the top to the robin's nest, but the other animals mock the field mouse and tell him it can't do it. The field mouse succeeds in returning it to the nest, but the wind blows it back down to the bottom of the rock. The other animals laugh at the field mouse's failure, but it knows that it had done it once before and it can do it again.