Questions about Unchained+Debrid+Stremio

I'm currently using Debrid+Stremio+Torrentino, but things could be better. How does Unchained help me? I read a little about Unchained, and I see that it enables you to play content directly from file lockers, etc. Does it scrape for you, or do you have to manually search for these links? Secondly, when using it for Stremio, how does it play content directly to that platform? Is it that the files show up in the RD folder?