Every ballet company in the universe will be performing The Nutcracker during the next few weeks. Usually to the music by Tchaikovsky. The original story, by E.T.A. Hoffman, is The Nutcracker and the King of Mice (Nussknacker und Mausekönig, 1816). I can't find an English translation, but here's the Project Gutenberg's German text.
Tchaikovsky's ballet was based on the version written by Alexandre Dumas in 1844. The French text is here.
Unfortunately I was unable to turn up English translations of either work.