Smallville: Season 4, Episode 22

4 - 22: Commencement

Clark begins to piece together the reason he was sent to Earth after he has a nightmare that something horrible is going to happen to Smallville and heads to the cave to seek answers from Jor-El. His biological father tells him he must reunite the three crystals immediately or a disaster of epic proportions will befall the planet and even Clark won't be able to stop it. Meanwhile, Lex first helps Lana escape Smallville after the death of Genevieve Teague then takes shocking action to get one of the crystals away from Lionel. Realizing the crystals are connected to Clark, Chloe tries to stop Lex from discovering the truth...