The 57th (short story)

Summary
When a planet appears in Earth's skies, scientist think they have created life and plan a different kind of future. The Doctor and Nyssa return to present-day Earth to find there are now two planets in the sky The other planets threaten to wage war across the Earth and end life for the humans forever. Can The Doctor and Nyssa prevent a war from breaking out and put a stop to the planet kidnappers?

Characters

 * Fifth Doctor
 * Nyssa

Continuity
to be added

Timeline

 * This story occurs after BFA: The Game
 * This story occurs before ST: Saturn