After speaking to the old hermit, the Doctor returns to his cell as they are summoned by the leader of the monastery. The Doctor learns of the training program used by the monks and the Eighteen Bronze men, curious, the Doctor enters the temple of the test and learns its secret. The Eighteen Bronze men are really Sontarans, stranded on Earth. The Doctor escapes with the help of a monk as the he learns of the Sontarans plan to summon reinforcements. The Hermit returns as they battle for control of the monastery and the fate of the Earth.