New era.

Great game, very well-made, you can immediately feel the quality... But I have a problem: in the first mission, I can't finish it. I go through it to the end, enter the final gate to exit the Empire lands, the final cutscene plays, but nothing happens next... I go back through the same garrison, the cutscene plays again, but nothing happens, the game just continues. People who know, please tell me how to get to the next map.

I didn't encounter this error during testing. A battle with a human hero should start, but apparently, there's some kind of script error.
The save file could help to figure it out.

As for what to do:
1) A universal method is to unlock the console and enter the command @Win() in it, then press Enter.
2) Try to advance the days until the beginning of the next week, and then go back to that zone. There is a chance that the error is due to the fact that the week is odd, but this is just an assumption.