In spring a year

Neville is working at Hogwarts in order to rebuild the castle. Harry comes back to Hogwarts to fulfill his 7th school year. Draco has to help to reconstruct Hogwarts over the summer due is the sentence of the Wizengamot. Luna didn't want to come back to Hogwarts for another year, but some Gitchbletck-Gnomes told her that she would find the most interesting truth in the old castle.