As a massive tornado approaches the unsuspecting Smallville, Clark finds a missing piece of the spaceship that carried him to Earth. The part activates the disabled craft, giving Clark the first clue as to where he came from. Meanwhile, Lex experiences two disturbing events: His father, Lionel, closes the plant and orders Lex to return to Metropolis, and the deceitful reporter Lex hired to spy on the Kents discovers Clark's superhuman abilities and the spaceship hidden in the storm cellar. Members of the rock band Remy Zero (themselves) perform their hit single "Save Me" -- the "Smallville" theme song -- at the Smallville High School formal dance.

Season 1 | Episode 21

Allison Mack

Chloe Sullivan

Annette O'Toole

Martha Kent

Erica Durance

Lois Lane

John Schneider

Jonathan Kent

Kristin Kreuk

Lana Lang

Michael Rosenbaum

Lex Luthor

Tom Welling

Clark Kent