“Attack of the Cybermen” is the first adventure of the twentysecond season of “Doctor Who” classic series, which aired in 1985. It follows “The Twin Dilemma” and it’s a two parts adventure written by Paula Moore and directed by Matthew Robinson.

The Sixth Doctor (Colin Baker) has more or less recovered from his regeneration and has decided to repair the Tardis’ chameleon circuit. The first result, however, is that the Tardis behaves abnormally. The Doctor still manages to drive it to Earth in 1985 and to show Halley’s comet to Peri (Nicola Bryant) while it’s passing near the Sun.

On Earth, former mercenary Lytton got into robberies and found some accomplices to steal diamonds for a value of several million pounds. The plan is to enter the bank where the diamonds are kept through the sewers but they find something very different from what they were looking for. Lytton activates a transmitter that emits a signal that gets detected by the Tardis and the Doctor decides to go to investigate.