This is the one where Clara is not Clara, Lethbridge-Stewart is not NOT Lethbridge-Stewart and we all learn the true price of war. Except Lethbridge-Stewart.
This is the one where we haven’t met River Song yet. Also there’s carnivorous shadows and existential horror. And River takes forever to say everybody lives.
This is the one where zombies take over London, we meet Captain Jack, Rose finally decides to break up with Micky, The Doctor Dances, and EVERYBODY LIVES.