Yeah, like you don’t know already: a very old man who gets younger flies around in a blue box. He’s incredibly important, bad guys hate him, he has a magic screwdriver, yada yada yada. Whatevs.
This is a dissection of the Series 6 Trailer that aired at the end of the 2010 natal special. There are some spoilers but none that will in any way affect your enjoyment of the show.