Smallville: Season 1, Episode 2

1 - 2: Metamorphosis

Bugs affected with Kryptonite cause a student to adopt the life cycle of an insect, and he targets Lana as his mate. Clark must rush to save her without revealing his superpowers. Meanwhile, Lex holds Lana's kryptonite necklace in his possession and ponders what to make of the strange stone...