You are looking for a pure sci-fi narrative or expect the entire episode to take place on another world.
Reviews for the series are generally mixed, as viewers were often split on its "hybrid" format, which blends high-quality CGI alien sequences with real-world nature documentary footage. Critical Consensus Alien Worlds
“A good series with interesting ideas that still doesn’t reach the heights it should. I like it—but once again, I wanted more.” IMDb Quick Verdict You are looking for a pure sci-fi narrative