OOC: You added Simeon to your group after you defeated the White Fist Orcs, because their new chieftan (who became chieftan because you slaughtered the former chieftan) wanted to save at least some of his tribe from total destruction. When you told him you were headed into the UnderDark to find the Vault of Larin Karr, he offered to send his son, Simeon, with you as your guide because he knows this portion of the Underdark fairly well, and certainly better than you do. The Chieftan (I don't remember his name offhand) also knows that to have any chance of success, you will need to avoid the UnderDark territory of the Crushed Skull Orc Tribe, enemies of the White Fist Orc Tribe. Simeon knows how to get around the Crushed Skulll Tribe, as well as the general area where the Vault of Larin Karr is located. (If not its actual, specific position.) That answer your question?