The cosmic entity Xeraphin, represented by Anithon, asserts its ancient dominance and demands recognition, compelling the Doctor and his companions to navigate its incomprehensible power and morality.

The Doctor reveals the Xeraphin’s native power source to Nyssa, identifying it as the Master’s ultimate goal. As he explains their combined consciousness and vast potential, Nyssa moves irresistibly toward …

The Doctor notes the molecular disintegration of Hayter’s body as Nyssa identifies his transformation into a Plasmaton, a spectral fusion of human and alien essence. A column of radiant energy …