The Coming of the Cybermen (comic story)

Summary
On the planet Minot the Doctor discovers a seemingly abandoned space carrier. He's trapped aboard when the Cybermen reveal themselves and lift off in the carrier. Discovering they plan to destroy Earth using a bomb, the Doctor primes the bomb but only has twenty-five minutes to escape.

Characters

 * The Doctor
 * John
 * Gillian
 * Cybermen

Continuity

 * The Cybermen have the appearance of those from The Tenth Planet.