Clark tells Jor-El he, 's ready to start his training, but Jor-El sends him back to Metropolis to cut ties with Lois before he can begin. Chloe is shocked when Lois suddenly reappears after having been missing for weeks, but Lois has no recollection of vanishing into thin air with the Legion ring. While investigating a monorail crash, Lois meets John Corben, a new reporter at the Daily Planet, with a negative attitude toward the Red-Blue Blur. Chloe begs Clark to use the Legion ring to go back in time to save Jimmy, but he refuses, driving a wedge into their friendship. Meanwhile, Oliver continues down a dark road, and Zod arrives at the Luthor mansion.

Reporter John Corben is out hunting the Blur when he’s hit by a truck. He recovers consciousness to discover that someone has transformed him into a cyborg with a Kryptonite heart. While he seeks revenge against the Blur, Clark turns to Chloe for help, Lois helps the Blur track down Corben, and Tess tries to find the persons who transformed Corben.

Zod and his soldiers release a virus into the air that turns humans into zombies. The only way to stop it is to make an antidote from the blood of another Kryptonian. After Lois is infected, Chloe pleads with Clark to donate his blood to stop the epidemic, even though it risks outing him to Zod.

Tess forces Oliver to come to a Queen Industries gala to put the Board at ease, but things go awry when the Toyman shows up with a bomb and a plan to take revenge on Oliver. The Toyman tells Oliver he must confess to murdering Lex or he will blow the place up. Meanwhile, as part of his training, Jor-El gives Clark the ability to hear other people, 's thoughts.

Oliver is drugged and kidnapped by a woman named Victoria AKA Roulette, who tells Oliver that he, 's involved in a dangerous game and must fight for his life. After Victoria shows up dead and Oliver is arrested by the police, he turns to Chloe for help. Meanwhile, Lois berates Clark for not telling her about Oliver, 's suicide attempt.

Lois auditions for a TV morning show but they’ll only take her on if Clark comes with her. Meanwhile, Oliver starts his new life by helping a young prostitute, Mia, find a place for herself and get away from her abusive pimp.

Jor-El mysteriously arrives at the Kent farm searching for his son, Kal-El, but meets Chloe instead. Convinced the Blur is Jor-El, Zod enlists Tess's help in finding him to force him to reveal the secret to his powers. Clark realizes Jor-El is alive and on Earth and races to find him before Zod does

Superhero twins Zan and Jayna show up in Metropolis to help The Blur fight crime but end up botching several rescues, landing Clark in hot water with the District Attorney, 's office. Clark decides to come forward as the Blur to clear his name.

Tess kidnaps Lois to find out where Lois went after she disappeared for weeks. Lois's memory of the future depicts a Metropolis under Zod's rule and Clark powerless under the red sun, while Chloe forms a resistance group with Oliver. After learning of these future events, Clark makes an important decision about Zod.

A mysterious archer attacks first Lois and then Chloe. Oliver fears that his apprentice, Mia, is next... and he knows the dark figure from his past who is responsible. Meanwhile, Zod introduces himself to Lois. '

A man named Sylvester Pemberton tracks down Chloe and tells her he knows about her team of superheroes and needs their help. However, before he can explain who he is, he is attacked and killed by Icicle. Clark and Chloe's investigation leads Clark to the former headquarters of the Justice Society of America where he meets up with Nelson AKA Dr. Fate, Carter Hall AKA Hawkman and Courtney AKA Star Girl. Courtney pleads with Hawkman and Dr. Fate to help her catch the killer that is targeting their group but they are reluctant to resume their duties as superheroes. Clark, John Jones, Green Arrow, and Chloe team up to help the JSA stop Icicle before he murders another member of the group. Meanwhile, Lois receives a package from a mysterious agency called Checkmate, run by Amanda Waller.

Clark meets Zatanna at a comic book convention, where she tells him her father charmed a copy of the comic book "Warrior Angel" and it holds magical powers. A young man named Stephen steals the comic book and develops super powers, transforming himself into Warrior Angel and saving Chloe from a horrible accident. Meanwhile, Lois becomes jealous of Clark's relationship with Zatanna.

It is Valentine's Day and while Clark is out on a date with Lois, he unknowingly becomes infected by gemstone kryptonite, which has magical wish-fulfilling properties. Clark mentions to Lois that he wishes they had a more traditional relationship,so Lois quits the Daily Planet, moves in with Clark and starts planning their wedding. Still unaware of his new power, Clark also casually tells Chloe he wishes she would spend more time watching out for him, so an infected Chloe takes his wish to heart and sets her sights on a new target - Lois.

Three Kandorians are abducted by a crazed doctor who they performed experiments on, and who now believes that they are alien invaders intent on conquest. Clark insists on investigating and butts heads with Zod. Meanwhile, the doctor abducts Lois and tries to convince her to publish his story, and Tess tells Oliver to find the person responsible for embezzling funds from the company.

When Clark and Lois end up at the same romantic bed & breakfast as Chloe and Oliver, things get awkward. However, a new supervillainess, Silver Banshee, launches an attack on the men. Meanwhile, Zod and Tess square off against each other.

Tess engineers the abduction of Green Arrow and delivers him to Amanda Waller, the head of Checkmate. He escapes and warns Clark and Chloe, who discover that John Jones is conducting his own investigation. Clark confronts Tess, who reveals that Amanda's true objective is Chloe, and the heroes who work with Watchtower.

Lois investigates a hidden lab where Tess' scientists are conducting experiments with red kryptonite. She inadvertently starts an explosion, and when Clark later investigates, he becomes infected. His worse self is unleashed and he joins forces with Zod against the humans, forcing Tess and Chloe to team up to stop them both.

The Blur comes between Clark and Lois when she vows to protect the Blur's secret... unaware that Zod is impersonating Metropolis' hero. Meanwhile, former D.A. Sachs is out of prison and working with the Black King to learn the identity of the Blur, and a new editor gives Clark and Lois an ultimatum.

Tess breaks into Watchtower, triggering an elaborate security system that Chloe installed, ultimately trapping the two women inside. Chloe realizes that the Kandorians are downloading information about from the Watchtower server, which prompts her to make a drastic move. Oliver confronts Zod and winds up clinging to life with a Z scorched into his chest. Clark realizes Zod has given his soldiers super powers.

Clark finds Martha and Perry White returning to Smallville. Lois and Perry team up on a story they are both working on, but end up getting in serious danger. Meanwhile, Clark and Chloe search for a way to stop Zod and the rest of his army.

As Zod and his Kandorians make their move, Clark must consider whether to use the Book of Rao despite the cost to himself. Chloe unites the other heroes of Earth to oppose the Kryptonians, while Tess seeks redemption and pays the price.