Lois and Clark team up with H. G. Wells and go back in time to the day of Clark's arrival on Earth in an attempt to stop a citizen of a future utopia from killing the infant Superman.
Clark summons the courage to tell Lois he is Superman, but is interrupted by a man he's never met yet knows his secret identity. Martha and Jonathan's relationship is put to the test when they are taken hostage.
When Lois hesitates to accept Lex Luthor's proposal of marriage, citing attachments to her job and friends, she unwittingly gives Lex the motivation to take away from her everything she holds dear.
As Lois and Clark try to come to terms with Clark's marriage proposal and Lois's discovery of his secret identity, head of Intergang Bill Church Sr.'s attempts to go straight are hampered by his new wife and his son.
Clark's plan to propose to Lois again hits a major snag: The use of red kryptonite by two scheming sisters results in Clark's powers being transferred to Lois, forcing her to assume a costumed identity to deal with the problem.
Lois struggles with the emotional fallout of her near-marriage to Lex Luthor and Clark's withdrawn confession of love for her. Lex's ex-wife arrives in Metropolis seeking revenge for Lex's death, aided by a perfect body double of Lois.
Lois and Clark's plans for their first date go into a tailspin when Dr. Gretchen Kelly brings Lex Luthor back to life. Lex soon finds that while he has his life back, he's lost everything else he cares about.