A band of Klan-like night riders have been running rampant, and ranch owner Julian Marbolt (Andre Beaulieu) -- who is afflicted with day blindness and can only see in the evening -- offers a reward for the leader's capture.

Mr. Blackwell discovers a relic that informs him about Blythe (as Ayesha, or "She-Who-Must-Be-Obeyed"), who loved his father and others in the ancestral line. Blackwell accompanies pal Heinrich George and handyman Tom Reynolds to Arabia.