For those of you who haven’t finished the book yet, I offer this concise summary of the plot, provided courtesy of a pirated Chinese knockoff translation:
Snape breaks into Hogwarts and rescues Lucius Malfoy from Azkaban Prison. Harry believes that he can defeat Snape and Voldemort only by strenuously practicing charms. Professor Slughorn, inspired by a book from the East provided by Cho Chang called “Thirty-Six Strategies,” devises a plan enabling Harry to seize Snape in the Ministry of Magic. But Gryffindor’s sword, which hung in the headmaster’s office, assassinates Professor McGonagall.
When Harry confronts Voldemort at Azkaban, the Dark Lord tries to win Harry over as a fellow descendant of Slytherin. Harry refuses, and together with Ron and Hermione, kills Voldemort instead. Now what will Harry do about his two girlfriends?