On the day of Lex (Michael Rosenbaum) and Lana's (Kristin Kreuk) wedding, Lex receives a call from Dr. Langston (guest star Fred Henderson) who threatens to tell Lana the truth about her baby.

Lana begins to have second thoughts about marrying Lex and Clark comes to his own realization that he can't let Lana marry Lex and decides to tell her about his secret. However, no one is prepared for what happens when Lionel Luthor (John Glover) steps in.