Chloe visits a former friend of her father in Luthor Corp. to know if he is blacklisted, since all his applications are not accepted and he is not able to find a job. She steals his security card and breaks in the Luthor Corp. laboratory trying to find evidence. But she gets accidentally exposed to a meteor-rock gas which gives her the ability to makes people tell the truth whenever she gets in close contact with them, thus exposing their innermost secrets. Chloe uses her new ability to explore her curiosity of journalist, hurting people, including her history teacher, Martha, Lana, and Pete, thus showing the dangerousness of the absolute truth when she attempts to question Lionel about his criminal past, and she gets more suspicious about Clark when she learns that he is the only one immune to her 'truth' powers. But when Chloe falls ill from the side affects, Clark risks his secret becoming known by trying to save her by trying to find the scientist responsible for the kryptonite gas concoction. Meanwhile, Lex continues to uncover evidence against his father to find the grounds for the FBI to arrest him on.

After being released from a prison in a laboratory of Luthorcorp's Cyntechnics by sympathetic scientist Dr. Hong, former Metropolis High football player Victor Stone is chased by armed security guards and hit by Lana's truck, without any harm. The car is totally destroyed, Lana wounds her forehead and Victor takes her to a hospital. Lana calls Clark, and he meets Victor, who played football against him in high school and died a year ago in a car crash. Victor explained that he became a living machine as part of the machine project researched by the evil Dr. Allister Krieg sponsored by Luthorcorp. Further, he misses his girlfriend Katherine. Clark promises to help him and visits Lex, who lies and tells Clark that he was not aware of the project. Meanwhile, Martha is blackmailed with a DVD showing Clark on a security camera rescuing the unconscious Lana from the warehouse explosion (from episode 'Lockdown') and Lionel offers to help her find the blackmailer.