The war against Voldemort is not going well; even Muggle governments are
noticing. Ron scans the obituary pages of the Daily Prophet, looking for
familiar names. Dumbledore is absent from Hogwarts for long stretches of
time, and the Order of the Phoenix has already suffered losses. And
yet...
As in all wars, life goes on. Sixth-year students learn to Apparate -
and lose a few eyebrows in the process. The Weasley twins expand their
business. Teenagers flirt and fight and fall in love. Classes are never
straightforward, though Harry receives some extraordinary help from the
mysterious Half-Blood Prince.