Doctor vs Guardian: Doctor must persuade the guardian to spare them from death/ sacrifice.

The Doctor and Jo are forcibly marched into a chamber housing a reactor-like device, which Jo fears is a sacrificial altar. As they approach, a miniature alien—the Guardian—emerges from a …

The Doctor and Jo are forcibly brought before the Guardian, a miniature alien ruler seated on a throne in a high-tech chamber. The Guardian, enforcing the city’s law that all …