The Doctors are kidnapped from their various timelines and dumped in the Death Zone on Gallifrey to play the game of Rassilon (except Four who is trapped in the Time Vortex.) when they are released as the looky likey they strip for save the children SPOILERS: Corrupt Time Lords are behind it all. But at least it's not the Master for once. The Master, the Cybermen, the Daleks, a Yeti and lots of old companions all make appearances plus it introduces the awesome Raston Warrior Robot.