Edit: By fictional, I’m thinking of the “not-Earth” (fictional Earth) trope.
The time period doesn’t matter. It can be medieval, Cold War-esque, modern, even sci-fi (but with the restriction of the technology not being so advanced that it looks like magic).
Also, if I were asking for a “perfect” recommendation, the plot would involve some politics, or more precisely, an idealist good person trying to navigate the complicated cold world of politics.
by cosmoniverse