Walkthrough for the "Tribes of the East" expansion.

Hello. In the second campaign about Goth, I can't pass the second mission where I need to talk to the other orcs with Kujin. I talked to the brown and green orcs, and now I don't know how to get to the Turquoise player's castle; the entire road is blocked. Please help me with what to do. If possible, could you provide a map with the path?