David and Donald are mischievous identical twins who are given books for their birthday by their Aunt Aggie - Hans Andersen's fairy tales and Grimm's fairy tales. They quarrel over which book should be read to them first, and after Aunt Aggie tells them that they should be kind and love each other they shake hands and toss a coin to decide. The narrator concludes by saying that 'David and Donald found that they got on much better when they acted together than when they did not', and asserts that the reader might apply this thought to their own life.