Teenager Clark Kent must cope with his emerging superpowers and his love for classmate Lana Lang. Clark befriends Lex Luthor and thwarts a vengeful former student.

Clark discovers that a fellow high school student, Greg Arkin (CHAD E. DONELLA), has been attacked by Kryptonite- affected bugs. Greg has taken on the "eat, molt, mate, die" life cycle of an insect--with Lana as his prey. Clark must rush to save her without revealing his superpowers. Meanwhile, Lex possesses Lana's Kryptonite necklace and ponders what to do with the strange stone.

Clark and Lex defy their respective fathers. Clark joins the football team, against Jonathan's wishes, ultimately discovering that the coach, Walt Arnold (DAN LAURIA), has been altered by Kryptonite and is using fire-starting abilities to hurt anyone who might prevent him from winning. Meanwhile, Lex battles his own father, Lionel Luthor (JOHN GLOVER), for control of LuthorCorp.

Clark reels from his first flashes of X-ray vision. His shock is compounded when he witnesses a bank robbery, apparently by his friend, Lex. Unsure of how to control this new power, Clark nonetheless puts it to use when a Smallville teen who has developed shape-shifting abilities threatens Lana.

Clark has a chance to share a night out on the town with Lana, thanks to Lex's matchmaking, but the evening is interrupted when Clark faces an icy enemy, Sean Kelvin (MICHAEL CORISTINE). Sean is an aggressive flirt who suffers from a Kryptonite-induced case of permanent hypothermia and has to feed off of others' body heat to survive--starting with Chloe.

Clark is wracked with haunting visions when he meets an old woman, Cassandra Carpenter (JACKIE BURROUGHS), who can see the future. Lex schemes to use Cassandra's gift to glimpse his own destiny and learn more about Clark's secret. Meanwhile, a bitter old man, Harry Bollston (GEORGE MURDOCK), discovers a "fountain of youth" and reverts to a teenager. He then seeks revenge on the descendants of jurors who put him in jail decades ago.