Exploring the very edge of the known universe, the Doctor, Leela and K9 discover a group of astronauts searching for the lost gene bank of Minyan race [sic]. During the perilous voyage, the astronauts' craft plunges into the heart of a recently formed planet, wherein an awesome secret is hidden.
How will the Minyan quest end?
What must the Doctor wrest from the Heart of the Oracle?
