The Elves and the shoemaker

"Tomorrow, I will make one last pair of shoes to sell at the market,"

 Today, I read The Elves and  the shoemaker a series of Folk&Fairy Tale.
 There were two old couple and two elves in this book. The two old shoemaker are poor and are to give up to make shoes.

One night, they decide to make a last pair of shoes and went to bed.
And the next day, they are surprised to see ...