The Seventh Doctor gives Benny a lesson in Gallifreyan history using a 3-D holo-simulation. They watch as Magnus attempts to drain the power from a huge sphere of Artron energy which has been brought back from the Time Vortex. Magnus is strongly opposed by his former friend Theta Sigma who, when it is revealed the Artron energy is alive, uses a Chancellery Guard's gun to end the draining and set the energy being free.