@Faket The planet was Abydos, the same planet from the movies, and the same planet skarra comes from in the series and movies.

Kasuf was the leader in the movies and series of the planet (pictured below from the series). He was also the father of sha're. So this is his younger self.

There is a **ton** of backstory that you apparently missed when you watched it (which explains why you didnt get as much out of it).