Clark (Tom Welling) and Lois (Erica Durance) discover Kara's (Laura Vandervoort) spaceship but before they can open it, Kara appears and knocks Lois out.

Clark is shocked after Kara tells him she is there to protect baby Kal-El. Despite Kara's appearance, a despondent Clark decides that without Lana (Kristin Kreuk) there is nothing keeping him in Smallville, and heads to the Fortress of Solitude to begin his training as a superhero.

However, Jor-El tells him Kara's father -- Zor-El, who is Jor-El's brother -- is evil and Kara is dangerous, therefore Clark must stay in Smallville to find out why she came to Earth. Lex (Michael Rosenbaum) makes a stunning discovery regarding Lana and Project 33.1.