No, the 'everyone in a circle' just discusses the last mission. You got water, now you need oil. Finish up Caspian, side missions etc, then sleep until night. Now drive out to the Baron stronghold. A couple hundred metres from the entrance, on the right hand side of the road, you'll see a camp fire and Damir & Guil. Stop and talk to them.

Same issue，when all enemies are destroyed and no subsequent plot is triggered，
Is there a solution to the problem？