The Doctor, Jo and the Master are presented to the Emperor and the Doctor gives the ritual greeting, "My life at your command." The Prince is incensed that the Doctor has the temerity to address the Emperor like a Draconian noble, but the Doctor says that he "is" a noble of Draconia — the title was given him by the 15th Emperor, five centuries before when he aided Draconia against a plague from outer space. The Doctor accuses the Master of trying to instigate a war between Earth and Draconia using Ogrons and the hypnosound device. As the Emperor considers this, a courtier announces that an Earth spaceship has arrived. Jo hears the sound of the sonic device, and realises it is the Ogrons. They burst in, guns blazing, and retreat with the Master, leaving several dead Draconians in their wake. One Ogron has been knocked out by the Doctor, and as the effects of the hypnosound fade, the Emperor sees the "Earthman" before him transform into its true form. He then realises the Doctor is speaking the truth.