The Not-So-Sinister Sponge (short story)

Summary
The Doctor, Romana, and K9 arrive on an uninhabited planet made up entirely of confectionery. K-9 seems in a bad mood, and Romana realises that it is K-9's birthday. To celebrate the occasion Romana takes the Doctor's TARDIS to fetch a dedicated sponge cake from the Masterbakers of Barastabon. After a brief time storm-induced detour to the planet Kendrax during which she ably foils an alliance of the Master, the Daleks, and the Cybermen, she returns with the cake.

K-9 is cheered by the gesture, but before the trio cut the cake it comes to life and asks politely not to be eaten. The Doctor theorises that the unique combination of a trip in the TARDIS, exposure to the telepathic circuits, and the unusual properties of the confectionery planet brought the Cake to life. At K-9's suggestion, they release the Cake to live out its life on the confectionery planet.

Characters

 * Fourth Doctor
 * Romana II
 * K-9 Mark II
 * The Cake

Continuity
to be added

Timeline

 * This story occurs after ST: Return of the Spiders
 * This story occurs before ST: Special Occasions: 2. Do You Love Anyone Enough?