If you are referring to the fourth episode of the anime's first season, the story focuses on infrastructure and new arrivals:
: Efforts to establish a second and third village begin, and Hiraku starts an expansion of his own house. Isekai Nonbiri Nouka 4
Isekai Nonbiri Nouka Season 2 - Episode 4 discussion : r/anime If you are referring to the fourth episode
In the fourth volume of the Isekai Nonbiri Nouka (Farming Life in Another World) manga and light novel, the peaceful life in Great Tree Village takes a competitive and eventful turn. Volume 4 Plot Summary : Zabuton’s children bring a queen bee to
: Hiraku and the high elves collaborate to build a reservoir and a complex waterway to bring fresh water to the farm.
: Zabuton’s children bring a queen bee to the village, prompting Hiraku to build a hive and plant flowers for honey production.