The Cybermen use their Cyber-Mole to burrow beneath London into Earth's secret weapons store to steal the doomsday bomb and hold the world hostage. Educating the military with his knowledge of the Cybermen, the Second Doctor leads the anti-Cyberman weapon assault on the Cyber-Mole.
For the purposes of this list, a "Cyberman story" is one in which one living, authentic Cyberman plays a part within the confines of the story, outside of flashbacks to previous stories and cliffhangers that lead into the following story. For this reason, stories such as Dalek are absent due to only featuring deceased Cybermen on display. Stories like Carnival of Monsters, A Good Man Goes to War and The Vanquishers are also not included due to the Cybermen's appearance being of little consequence to the plot of the story.