Please offer some advice.

Guys, I can't find the map I played a few years ago. I definitely remember not downloading it from anywhere; it was most likely a default map. I don't remember if it was from the original game or an expansion pack. The name in Russian was something like: "Journey of <character name>" or "Adventure of <character name>". The main idea is that you start as a lone hero without an army or a castle, then you fight monsters alone, and you are given a Nature castle with creatures of level 2 at most. After that, you can play with an army, and the scenario continues with 3 more hostile castles. I don't know what happens next because I couldn't complete it, but the map is very memorable. I also remember that the difficulty level of the map is the second highest. Has anyone played this?