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.

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

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

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

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

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

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

After being struck by a truck, John Corben wakes up alone in an abandoned apartment as a man-machine with a Kryptonite heart. Corben realizes he now has superhuman strength and sets out to exact revenge on the Red-Blue Blur, who he perceives to be an irresponsible vigilante. Against Clark's wishes, Lois involves herself in the Red-Blue Blur's investigation, and winds up getting kidnapped by Corben.

Oliver tries to help a young street girl, Mia AKA Speedy, get out of her dangerous life by offering to train her, but Mia double crosses him. Lois asks Clark to help her land a job as an on-air television host, but the two are shocked when the station wants to hire them as a team.

Lois investigates the early prison release of ex-District Attorney Raymond Sacks but he threatens her with a gun when confronted. The Blur saves her, but is captured on film by a delivery guy who plans to sell the photo to Sacks. Lois and Clark each attempt to thwart the delivery of the photo and run into Maxwell Lord, a wealthy tycoon and Checkmate operative, who is trying to learn The Blur's identity to eliminate him. Meanwhile, Chloe discovers Zod's secret.

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.

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.

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.