Lex tries to turn a soldier that supposedly died in Afghanistan into a "super-soldier." A senator threatens to tell the world about Lex’s labs, prompting Lex to send the "soldier" to kill the senator. Lois sees the attack and becomes the soldier’s next victim.
Episodes for season 6
Clark discovers the reason Lana married Lex then and sets out to kill Lionel. Lex tries to use DNA from the last phantom to power his super-soldiers. Lois goes to a dam to search for Lex’s lab but is caught by a security guard and fatally injured. Chloe’s power is discovered.
Chloe steals something from Lex. Lex discovers that Chloe’s mother has special abilities and forces her to help him in exchange for Chloe’s life. However, she has a trick or two of her own to use to escape.While Lana finds out she was never pregnant.
Lex gets trapped in one of his labs by a distraught woman claiming he kidnapped her husband. She threatens to destroy the lab–with Lex still inside–unless he divulges her husband’s whereabouts. When something unexpected causes a rescue attempt by Clark to fail, he becomes trapped as well. Now, the two men must overcome their hatred for each other if they want to make it out alive.
Lana and Lionel have a secret meeting, after which Lana is shot. While Jimmy is observing photos of the encounter, he is knocked unconscious. While unconscious Jimmy dreams about what life in Smallville would have been like in the 1940s. Clark is a reporter at the Daily Planet, Lana is a siren who planned the demise of her magnate husband Lex, and Lois is a singer at a bar that Lionel owns.
Lana has a stalker which leads her to an unexpected hideout. Also, Chloe has to reevaluate her feelings for Clark after she and Jimmy break up due to Jimmy’s belief that she isn’t really over Clark.
A boy named Tobias was blinded by the meteor shower but given the ability to identify other meteor freaks. Lex is using Tobias to locate other people with abilities so that he can perform experiments on them. Lana learns of Tobias and is fearful that he will name Clark as a freak, so she offers him a cornea transplant to keep him quiet. But Tobias has some surprising news.
Clark has second thoughts about Lana marrying Lex, and Lana has the same concerns. Meanwhile, the doctor involved in the secret behind Lana’s pregnancy threatens Lex with his knowledge.
Clark and Chloe find an escaped Zoner named Titan who is the star of a secret fight club that puts its death battles on the internet. Lois can tell that there is a story and goes to investigate, where she is put in the ring to fight. Clark goes in as a super-powered fighter to take on Titan but ends up against a different opponent instead.
Clark is once again exposed to red kryptonite, and his "other self" goes on a rampage of sorts on Valentine’s Day, kissing the women he’s most attracted to and expressing his uninhibited feelings for the various relationships around him.