The Doctor's struggle to maintain rational authority while confronting unexplainable phenomena on Deva Loka

While the Doctor, Adric and Tegan explore Deva Loka’s dense jungle canopy, the Doctor stumbles upon an intricate cluster of crystal windchimes suspended from the canopy. Tegan and Adric investigate …

Adric’s impulsive curiosity triggers a sealed armored suit to life, its mechanical limbs locking around the Doctor and Adric with sudden force. The suit imposes its telepathic control and marches …