With Clark living in Metropolis under the influence of red meteor rocks, his friends and family go to great lengths to try and find him. Lionel and Helen clash over Lex's mysterious alleged death.
Morgan Edge, a crime boss who hired Clark to steal a package from LutherCorp while he was in Metropolis, follows him home to Smallville. Lex returns home with the aching question of who betrayed him.
Clark saves Lex from a killer's bullet, but is nearly killed when the man learns of Clark's weakness and shoots him with a bullet formed out of the meteor rock element.
Clark is pursued by a sleazy television reporter -- Perry White -- who is determined to learn his secret after problems with Clark's powers reveal his uniqueness. Lex is pressured into counseling.
Lana discovers that a drifter suspected of killing her great aunt 40 years ago looks just like Clark. Clark's investigation leads him to a stunning discovery about his father.
A student with the ability to control magnetic fields uses his meteor rock-derived powers to make Lana fall for him. Lex and Chloe form a new alliance.
Lex seeks help from Clark after barely escaping an assassination attempt -- but his behavior makes it hard for Clark to dismiss Lionel's claim that his son has suffered a mental breakdown.
Lex is institutionalized, but continues to suspect that his father is trying to shut him up for what he knows. Three of Clark's former adversaries plot to use him to escape the asylum. Lana meets someone during her recovery efforts.
When a Kryptonite accident leaves Clark blind, he develops super-hearing -- and must use it to save Pete, who is kidnapped in order to blackmail his mother. Clark learns that Chloe has been gathering information about him for Lionel Luther.
Clark starts a relationship with a girl who has teleportation abilities -- and whose obsession over him soon threatens everyone she thinks stands between them. Lana seeks help from Lex in investigating Adam.
After his brother appears to miraculously return from the dead, a young man threatens to destroy the hospital if his brother does not receive the liver transplant he needs to survive.
Clark receives a terrified phone call from Lana, who is being chased by an unknown gunman -- only to learn that the call came from the future. Lionel pursues his secret serum research, only to have Lex targeted for investigation following a disaster at the lab.
Clark discovers that Jor-El is sending his father Jonathan messages through the key, drawing him into a confrontation with Lionel Luther -- who has struck a bargain with Dr. Swann.
Chloe is exposed to a strange gas, which forces everyone to whom she talks to tell the truth -- an ability she can't resist using against her classmates, her friends, and the Luthors.
Lex undergoes an experimental procedure to try and recover the memories that his father took from him, but instead unlocks the secret of his baby brother's fate.
When a young Kowachi acquires a knife that gives him super powers, Clark must consider the prophecy that says he is the Kowachi savior. Lana considers whether her dream of going to Paris is worth losing the Talon.
Lana is confronted by an old childhood friend, who wishes to prevent her from going to Paris. Clark considers telling Lana his secret to keep her in Smallville, and Lex makes a final move against his father.
A young woman arrives on the Kent's doorstep claiming to be from Krypton, and tries to convince Clark to leave with her to meet his destiny. Lionel makes a last-ditch effort to save himself.
