Maaga and the Drahvins against the Rills for survival.

The Doctor, Vicki, and Steven are ambushed by a hostile Chumbley robot on the planet's surface, forcing them into a tense standoff. The Doctor deduces the Chumbley's sensory capabilities—blind but …

Left alone in the Drahvin living quarters, Vicki—already suspicious of Maaga’s hidden motives—presses her ear to the bulkhead and eavesdrops on a private, unguarded tirade. Maaga, her usual icy composure …