The High Priest is seen Praying to Sho-Na Muh with two other priests. Sho spots you flees the room. You must battle the High Priest and the two other priests. He has twice the stats of a normal priest. After he is deafeated, He must pick up the key to Sho's Room. Once you pick the key, five peasants and four royal guards will attack you. You then can enter Sho's Room to fight him.