During Clark's battle with the last Phantom Zone wraith, Lex is rescued by a mysterious woman. She then goes to the Kent farm and reveals she is Clark's cousin, Kara, from Krypton.

Clark and Lois meet Smallville's newest arrival face-to-face, and she has some surprising news. Clark decides to leave Smallville and continue with his superhero training but Jor-el informs him that a new Kryptonian menace has arisen.

Kara takes to life in Smallville by getting a job at the Talon, and entering the Miss Sweet Corn Pageant as a contestant, overruling Clark's objections. However, Lex takes an interest in her and three of the other contestants discover she has super-powers and decide to use her to steal a valuable time capsule.

Dr. Curtis Knox says he can "cure" someone from being a "meteor freak," changing their lives. Chloe takes an interest in this, but Dr. Knox may have another secret.

When a movie is shot in Smallville, Clark is forced to secretly use his powers to save someone from a runaway car... but somebody is looking and becomes Clark's biggest fan. Meanwhile, Lionel's fate is revealed.

Kara goes to Washington to look for her missing crystal, but is captured after she breaks into the lab. She's sedated with a truth serum that has kryptonite in it, which makes her relive a trip to Earth from the past. In this past trip she followed Lara, Clark's biological mother, to the Kent's farm. Clark saves Kara, but also ends up being affected by the serum when he burns it with his heat vision.

Lana absorbs Clark's powers during a lightning storm, which she uses to break into Lex's safe and steal some incriminating evidence. After being turned away by Grant at the Daily Planet, who won't accept her stolen evidence, Lana goes after Lex herself. Clark tries to rescue Lex, but must first battle the super-powered Lana.

Clark hears his mother's voice trapped in Kara's crystal, and releases her. She gives him Jor-El's ring made of Blue Kryptonite, which strips him of his powers.

A mysterious man who claims to be a product of Lex's latest project plants a bomb on Chloe and uses her to force Lois to get the truth from Lex.

Chloe begins to notice that Clark's not acting like himself. Bizarro enlists the help of Brainiac.

When Green Arrow's band of heroes thwarts his efforts once too often, Lex employs a super-powered vigilante to take down the Emerald Archer.

Lex tracks the amnesiac Kara to Detroit, where Lois follows him. An obsessive busboy infatuated with Kara shoots Lex, and Chloe has to determine whether to heal him or not.

Pete Ross returns to town and finds a number of surprising changes since his departure. Besides resolving his feelings toward Clark since he learned of his friend's secret, Pete has to deal with the acquisition of a superpower of his own.

Lionel has Clark kidnapped, and when Chloe and Lana confront him, he makes them think Lex is the culprit. Chloe and Lana then beg Jor-El to restore Kara's memory because she's the only person who can rescue Clark.

Clark must learn a new superpower as he and Kara join forces to take on Brainiac, putting the lives of their friends in danger.

No one is safe when Lex seeks the secret of Veritas, and Clark tries to stop him.

While Clark seeks out Brainiac to force him to fulfill his side of their bargain and restore Lana, Chloe and Jimmy go up against the government.

When Clark wonders if the world would be better off if he never came to Smallville, Jor-El shows him what life would have been like if he had never existed.

After Lex is attacked by a mysterious stranger, he and Clark both discover the last surviving member of the Veritas group who holds the secret to controlling the Traveler.

Lex is taken to the Fortress to fulfill his destiny, while Lana awakens from her coma and Chloe is arrested by the government.

Green Arrow calls upon fellow heroes Black Canary and Aquaman to locate the missing Clark Kent, last seen in the Arctic. The Martian Manhunter also joins in to help out.

Chloe invites an injured 15-year-old to move in with her. Meanwhile, Clark experiences his first day of work with Lois.

When Oliver is poisoned, he starts having flashbacks to the period when he gained his archery skills... and met Tess. Meanwhile, Chloe has to make a decision which surprises Clark.

Tess and her team perform tests on the crystal she retrieved from the Arctic, causing it to send a beam of light into the universe; the beam of light triggers the arrival of Maxima, a queen from another planet looking for her soul mate.

A heartbroken psychotic wearing a watch jeweled with kryptonite abducts Chloe and Jimmy and subjects them to a polygraph; while searching for them, Clark and Lois pose as a couple.

Clark believes a recent attack in a theater may be the work of a serial killer; Davis fears that his blackouts could mean that he is the killer.

Jimmy catches a red and blue blur on film when he takes a picture of Clark saving Lois from a mugger; after Tess decides to run the picture on the front page of the Daily Planet, Clark fears his identity will be discovered.

Clark receives a package containing the crystal that Tess found in the Arctic; the crystal activates, sending Clark and Lois to the Phantom Zone, where they run into Kara (Laura Vandervoort); Zod's wife, Faora, takes over Lois' body.

Clark takes Chloe to the Fortress of Solitude so Jor-El can heal her after Brainiac replaces her memories with Kryptonian code.

Unexpected guests crash Chloe and Jimmy's wedding; Oliver thinks he has found Lex and sets out to confront him, but he is shocked to find Lana instead; Lois and Clark grow closer.

The Persuader attacks Clark; Chloe, as Brainiac, tells Davis he is Doomsday and that he was created to destroy the "other Kryptonian" and the world.

Clark learns that John Jones was shot while working as a police officer; Lana tells Tess that Lex isn't the man she thinks he is, forcing Tess to re-evaluate her position as head of Luthercorp.

Clark discovers that Lana is missing; Tess reveals what really happened to Lana when she woke up from her Brainiac-induced coma; Tess is shocked by what she discovers in a secret LuthorCorp facility.

An explosion at LutherCorp injures Oliver and kills all the board members.

Linda Lake returns to Metropolis and threatens to expose Clark’s secret unless he promises to give her exclusive information on the red-blue blur so she can become a star reporter again. Refusing to be blackmailed, Clark tells Lois his secret and asks her to write his story for The Daily Planet.

Tess invites Clark to a press conference in New York but when an explosion rocks the private jet they are on, Clark must figure out how to save them without Tess learning his secret. Unbeknown to Clark, Tess orchestrated the explosion to get Clark to reveal his powers. Meanwhile, Davis discovers a surprising way to control the monster within.

At Chloe’s birthday party, a mysterious magician named Zatanna grants Chloe’s wish to be more like Lois and switches the two into each other’s bodies. Zatanna searches for her father’s book of spells so she can conjure up his spirit but not before also granting Clark his deepest wish.

Tess tries to kill Davis by blowing up his truck. However, after he escapes, she realizes she needs help to destroy him and turns to Clark. Tess reveals Davis' secret childhood with the Luthors and hints that she knows Clark's true identity. Meanwhile, Davis runs to Chloe for help.

Lois believes that she needs a big story to secure her reputation as a star reporter but the red/blue blur continues to elude her. However, after Chloe is mugged, Lois steps in to fend off one of the attackers and uses the opportunity to pretend a new superhero, Stiletto, has come to town and is giving exclusives to Lois. Clark is concerned Lois will hurt herself pretending to be a superhero but after he is captured by thugs with kryptonite, Lois steps in to save the day.

Clark discovers that Davis is still alive and confronts Chloe about protecting him. Oliver discovers Jimmy breaking into Chloe’s apartment, but things get rapidly worse after Davis jumps from the shadows and attacks both of them.

Chloe returns and begs Clark to kill Davis, claiming he can no longer keep the beast under control. Tess has assembled a team of meteor freaks, including Plastique, to track down Davis so Clark can kill him. However, things get out of hand once Tess’ team discovers she is double-crossing them.

Oliver tells Clark he must kill Davis, as Doomsday is a serious threat and must be stopped at all costs. However, Clark struggles with taking a human life, so the Green Arrow and his team decide to take matters into their own hands. Lois takes on Tess, but the fight takes a shocking turn. Meanwhile, Chloe gets caught in the middle of Oliver and Clark’s battle over killing Davis.

Lois finds Clark's lifeless body and removes the blue kryptonite enabling him to heal himself. However, Lois sneaks away before Clark fully awakens in order to protect his secret. Meanwhile, Chloe is desperate to find Oliver, so she turns to an unlikely source for answers. Jonathan returns to the Kent Farm with a message for Clark, and Tess awakens in a LuthorCorp lab.

After Lois departs for Egypt, the Daily Planet hires a new reporter by the name of Cat Grant to take her place. An assassin named Deadshot takes aim at Cat but Clark learns the man has a dangerous hidden agenda that involves The Blur. Meanwhile, Carter Hall turns up in Egypt to keep an eye on Lois and he tells Lois about his wife Shayera.

Clark is stunned when Kara returns to Earth and tells him Jor El sent her to stop the dark force that is coming because he doesn’t believe Clark can handle it. Meanwhile, Lois confronts Gordon Godfrey, a shock jock radio DJ who has been crusading against heroes, after he threatens the Green Arrow. However, after Godfrey is possessed by the dark force, he takes Lois hostage and Clark and Kara have to come to her rescue.

In an attempt to cheer up Clark, Lois convinces him to attend their five-year high school reunion. A visit back to the home of the Crows has Clark remembering old times with Lana and Chloe, while Lois is furious that no one remembers her five days as a student. Brainiac 5.0 uses his Legion ring to visit from the future and takes Clark through his past, present and future. He shows Clark what really happened the night Jonathan died, Oliver’s current pain and Clark’s future at the Daily Planet with Lois and his role as Earth’s favorite red and blue superhero.

Lois decides to tell Clark she knows he’s The Blur, but she accidentally activates an ancient artifact that transforms her into the Goddess Isis, complete with superpowers of her own. Oliver and Clark reluctantly decide to ask Tess for help with Lois. Meanwhile, after Cat Grant witnesses Lois as Isis using her superpowers, she decides Lois is the Blur and sets out to prove it.

Clark is concerned about Lois’ safety so he diverts her away from covering the Vigilante Registrations Act by suggesting she cover another story. After he comes clean with her, an angry Lois tells him that she can take care of herself, but when a flat tire strands their car in the middle of nowhere, their plans take a turn for the worse and Lois ends up in serious danger. Meanwhile, Tess searches for a cure for Alexander, who is rapidly aging.

The General and Lucy Lane decide to drop in on Lois and Clark for a surprise Thanksgiving dinner. Clark and the General get off to a rocky start after Lois’ father bashes the superheroes and tells Clark he is trying to pass a vigilante registration law. Meanwhile, in an effort to stop the vigilante registration act from being passed, Rick Flagg lies to Lucy in order to lure Clark away from the farm long enough for him to assassinate the General. Lois is torn between making her father proud and her love for Clark.

Lois finds a video made for her by her mother, Ella Lane, before she died. After watching the tape, Lois makes a drastic decision about her relationship with Clark that takes her to the Fortress, where she comes face to face with Jor-El and Lara.

In an effort to protect the rest of the team, Oliver decides to register for the Vigilante Registration Act to see what the government plans to do with the new law. As he suspected, it was a trap to lure superheroes to an undisclosed location where he is confined to a jail and subjected to a battery of brutal tests under the supervision of Col. Slade. Aquaman and his new wife Mera team up with Clark to free Oliver. Lois is frustrated when Clark continues to push aside her offers to help the team and sets out to prove she can play with the big boys.

Tess acquires a Kryptonian box that once belonged to Lionel Luthor. When Clark accidentally activates the box, he’s transported to a parallel universe where Lionel found Clark in the cornfields instead of the Kents. In this universe, Clark Luthor is a murderer and Lois is engaged to Oliver and both of them hate Clark. Clark must be careful not to tip off Lionel that he’s not his son while trying to figure out how to get back to Earth where the monster Clark Luthor was transported in his place.

The VRA is in full effect and things take an unfortunate turn of events after the Green Arrow tries to stop a mugging but is attacked by citizens for being a super hero. Clark discovers that the civilians who attacked Oliver were all marked with a darkness tattoo. Carter Hall and Star Girl return to help Clark deal with Slade’s re-emergence after he kidnaps Lois.

Clark, Oliver, Lois and Dinah are released by the VRA after being captured at Hawkman's funeral, but each of them have flashbacks of Chloe holding them against their will. When Chloe returns, Dinah warns the others that Chloe may now be a traitor. Oliver dismisses her concerns, but Clark is unsure if he can trust Chloe after she disappeared without an explanation.

Clark is surprised to see Martha on the news speaking at a pro-vigilante rally. However, surprise quickly turns to horror when he and Lois watch as Martha gets shot on national television. Meanwhile, Lionel reveals himself to the world and reclaims LuthorCorp from Tess and Oliver. Lois and Chloe decide to cheer Clark up by showing him videos from thousands of vigilante supporters professing their support for The Blur.

Chloe and Oliver are mistaken for FBI agents investigating Desaad's recent string of murders and the pair are kidnapped by Desaad's minions. Desaad tries to infect Chloe with the darkness. Meanwhile, Lois tells Clark he needs to be more careful with his identity and suggests a disguise.

After Zatanna sends a magically spiked bottle of champagne to Clark and Lois for their bachelor/bachlorette parties, the gang blacks out after the toast, only to wake up the next morning and realize they can't remember anything about the night before.

Lionel and Tess go head to head in a battle for the Luthor name. Clark and Lois are stunned by Tess’ latest present to them.

Clark is shocked to find a mirror box in the barn. Clark Luthor surprises him and sends Clark Kent back to the alternate reality where Clark runs into a very angry Jonathan Kent. Meanwhile, back in our reality, Clark Luthor visits Tess and tells her that if she doesn’t side with him he’ll kill her. Lois asks Emil to help her bring Clark back.

After everything that happened with the VRA, Lois tells Clark it’s best to make “Clark Kent” forgettable and awkward so people don’t suspect he’s The Blur. However, the two are stunned when a fame-hungry superhero from the future, Booster Gold, sweeps into town and begins making saves and posing for press ops, completely winning over the city of Metropolis. Booster begins his campaign to take The Blur’s place as the “World’s Greatest Superhero” and tries to charm Lois into writing a story about him, but she’s not having his antics and begins her own campaign for The Blur. During one of Booster’s saves, an alien weapon in the form of a scarab falls from a truck and fuses itself to a boy named Jaime Reyes, turning him into the Blue Beetle. Unfortunately, Jaime is unable to control the suit and Blue Beetle starts attacking Metropolis.

Tess learns that General Slade was found unconscious on a street corner, proof that someone has gained access to the Phantom Zone’s escape portal and sent him back. Clark decides to return to the exiled land to make sure other phantoms are not fleeing and is furious when Oliver tricks Clark into taking him along. With Clark’s powers gone, the two are immediately captured by the Zoners who take them to their new leader, Zod, who is thirsting for revenge on Clark for banishing him to this Kryptonian jail. Meanwhile, Lois learns Clark trusted Tess with a secret, but didn’t tell Lois.

Clark takes Lois to the Fortress to get Jor-El’s blessing for their marriage. Jor-El bestows a unique wedding gift on the couple – he gives Lois Clark’s super powers so she can see what it’s like to be him for a day. Unfortunately, the Toyman has returned to Metropolis, so Lois must go up against the notorious villain instead of Clark. Meanwhile, Oliver searches for the Bow of Orion, which he believes will remove the Omega symbol from his skull, and runs into Kara, who is also on a mission to stop Darkseid.

The story of Clark Kent culminates in this epic two-hour series finale as Clark takes the last step to becoming the Man of Steel.