A man from Lex's past stalks him in conjunction with a mysterious death at Club Zero that Lex may have been responsible for. Meanwhile Chloe looks into Clark's past as an adopted child.

Clark gets into a class election and one of his opponents is a krypto-mutant who can control bees. Meanwhile a reporter from Metropolis visits to do a story on Lex.

Clark discovers someone is hunting people affected by the kryptonite rocks and the killer's next target is Lex. Clark uses his powers to save Lex, but is caught off guard when the killer learns his weakness and shoots him with a kryptonite bullet.