Getting the fourth segment of the Key to Time is the easiest part of the trip to the planet Tara, whose idyllic atmosphere lulls the Doctor into a mood to go fishing and leave the segment-tracing to Romana. She locates it after a short walk on a beautiful day, but her luck changes when she meets the courtly Count Grendel. Contrary to appearances, Tara is a hotbed of political intrigue, and beneath its Old World veneer lies a surprising advanced level of technological development that includes lifelike androids and electric swords.