When Dr. Virgil Swann dies, Clark Kent receives the octagonal metallic disc through mail. He goes to the Kawatche caves and after inserting the disc in a stone, he hears Jor-El ordering him to find the three knowledge stones to protect planet Earth against destruction. Since the first (retrieved from Lex in Egypt in the season opener) is in Clark's possession, the other two must be found. Meanwhile, Lex and Jason are in Shanghai, China trying to locate one of the stones. Lionel Luthor gives a copy of the map and an airplane to Lana Lang, and together with Clark, they travel to China and meet Lex and Jason where they get arrested and tortured in a temple by the oppressive authorities for information about the stone's whereabouts. When Lana is captured and also tortured, 'Isobel' returns to protect Lana's body and to fight Clark for the stone's procession.
—Claudio Carvalho, Rio de Janeiro, Brazil