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Oliver goes to a board meeting with LutherCorp to discuss a merger between their companies, when an explosion goes off killing all board members and injuring Oliver. Oliver believes that Lex is responsible for the blast, but Clark and Lana learn the bomber is actually Winslow Schott.
When Clark discovers Lana has gone missing, he thinks Tess Mercer may be responsible. Tess tells Clark some discerning news about an old friend and then learns of some news herself at a top secret LutherCorp facility.
Clark discovers that John was shot while working as a police officer so Clark puts on his uniform and goes undercover to find out who shot him.
Three superheroes travel back in time from the future to help Clark defeat Braniac who has taken over Chloe's body.
It's Chloe and Jimmy's wedding day and the two are getting married at the Kent farm and Doomsday makes sure it doesn't go off without a hitch.
As Braniac replaces Chloe's memories with Kryptonian code, all she can remember is Davis. Clark uses the crystal he was sent to rebuild the Fortress of Solitude.
Lionel Luther closes the Smallville plant and Lex tries to initiate an employee buyout to stop it; Whitney joins the marines; Roger Nixon attempts to reveal Clark's secret.
A meteor explosion gives Lana the ability to see through other peoples' eyes and she uses the power to rescue a kidnapped Chloe.
After a hit-and-run destroys Justin Gaines' (Adam Brody) drawing hand, he gains telekenetic powers and uses them to exact revenge.
Clark runs for president during class election against Sasha Woodman (Shonda Farr), a girl who can control bees. Meanwhile, a journalist comes to run a story on Lex.