Guardians of Time
There were six so-called Guardians of Time, who embodied different aspects of the universe and were thus masters of all of reality, perhaps even responsible for part of its creation.
Who set up this boat race? What happened to any of the participants? Did Doc know all along? We require enlightenment!
Doc and Romana blow up and/or rescue a Space Princess from a Darth-Vader-wannabe on their hunt for the final Horcrux
The Doctor and Romana (I) are tasked by Colonel Sanders to find six horcruxes in this opener to the season-long ‘Key To Time’ arc