Doctor Who (1963)

S14E13 The Face of Evil (1)

In a far-off future on an unnamed planet, the Doctor lands in a strangely recognizable setting. He soon discovers the fierce Sevateem tribe engaged in a struggle to rescue their imprisoned god, Xoanon, from the clutches of the Evil One and his loyal Tesh followers. However, the Doctor begins to question whether he is somehow responsible for the chaos unfolding around him.