The Rani opens a hole in time and accesses the Doctor's timeline. She uses this to trap him in the East End of London, where the Doctor switches between his incarnations. The Doctors and their companions meet the cast of the "EastEnders".
The Doctor manages to overload the Rani's TARDIS and send her into the time tunnel where she had trapped the First and Second Doctors and freeing the Doctors' other selves from the loop.
