Before all spaces merged into one under the influence of the World of Darkness, each powerful race had its own world. For the most part, only the Pillars had their own world, the exceptions to this rule being Dragons, Arkans, and of course Humans.
The Plants, as members of the Pillars, had their own world that very rarely had visitors. Unlike the Axalts or Ashens, who were always in conflict with someone and wanted to fight someone all the time, the Plants were a very peaceful race.
They were somewhat similar to the Inerians in that their world was closed and everything inside was subject to their own rules. They only came into contact with other spaces on exceptional occasions.
"We need to go there, right?" Osvald asked uncertainly, pointing to a massive fortress that looked like it was alive.