The Ice Warriors' mining operation versus Peladon's sovereignty and the Doctor's interference

Commander Azaxyr and his human collaborator Eckersley execute a calculated act of psychological warfare in the refinery’s control center. With air supplies in the mines dwindling, Azaxyr calmly chips away …

The Doctor and Sarah breach the refinery’s control room and find the ventilation system disabled, the air in the mines rapidly turning stale. Knowing hundreds of trapped miners will suffocate …