What will happen in 'The Name of The Doctor'?

Clara is summoned to an impossible conference call, alerting her that the deadly Whisper Men are closing in on Vastra, Jenny and Strax. Someone is kidnapping the Doctor’s friends, leading him toward the one place in all of time and space that he should never go. It’s a deadly trap that threatens to unravel his past, present and future…

A villian will use some ancient time lord machine to destroy the universe and all time and space, but the doctor already knew about the machine, and the only way to stop the threat is to use his name. Probably Clara is some how a missing piece for this plan.

They will not reveal the doctor's name but will see it in big gallifreyan letters on the sky, across the universe. And every being will unconsciously know that the Doctor save them, and they'll have hope.

River Song knows how to read Gallifreyan so she'll know his name. And the doctor will put his finger over her lips and say "shhh".

That's how I imagine the episode. If I had time I would write a fanfic about it.

I don't know what is going to happen, but I think it's gonna be spectacular.

I have absolutely no idea but it had better actually say the name instead of it being written across the sky.