They met up in the afterlife. The people that Merlin needed and loved were all dead and he was alone. They knew that one day they would rise again when they were needed. The Great Dragon said Arthur would come back when Albion needed him most but they knew that Merlin was Albion as much as he was magic. His life was tied to the land and as long as the land was standing, Merlin would live on. Only Freya could ever talk to the warlock and she could never tell him that the others were there. For centuries the pair met on the shore and she would tell him stories about the past when he couldn't remember. On days when he forgot what Arthur looked like or how Gwaine's arm around his shoulders felt, he would find himself on a small beach talking to his lady of the lake. Until the day Germany dropped the bombs. After that none of them saw Merlin.