Lex doesn't take it well when he discovers his father has him under electronic surveillance, and is using the info to undercut his business deals. He hires some crooks to bug his father's office but they decide to take Lionel and Martha hostage and break into the LuthorCorp vault. But the vault contains green meteor ingots that Lionel has had made, the octagonal key to Clark's spaceship, and a confidential file on Clark. Lionel and (secretly) Lex start negotiating with the crooks when the latter finds out what his father has secretly horded, and the crooks decide to go with Lionel. Meanwhile, Clark leaps across from the Daily Planet building and starts taking out the thieves but is exposed to the kryptonite. Martha locks up the kryptonite and Lionel shoots the head crook, Pine. The Kents manage to destroy the file and Martha secretly pockets the key, leaving the audience to wonder if Lionel knows more than he's saying.
Meanwhile, Lana meets with her biological father Henry's wife who gives her some advice, and the Kents have problems over Martha's job with Lionel. Martha decides to stay with Lionel (with Jonathan's approval) to find out what Lionel knows.