Lana decides to enroll at Metropolis University at the last minute and is forced to join a sorority to find housing. The house leader Buffy Sanders, and her sorority sisters, offer her more than a place to crash when they turn her into a vampire. Lex provides Clark with an antidote for Lana, after LuthorCorp is revealed to be connected to the vampires. Lana tells Clark that she is moving to the Metropolis University and she
is accepted in the Tri Psi Sorority, a sisterhood with hot vampires led
by Buffy Sanders, and Lana is transformed in a vampire. Meanwhile, the
chief-editor of The Daily Planet, Pauline Kahn, denies an intern
position to Chloe, but in the end she proposes Chloe to write a good
story to prove that she might be part of the team of reporters.
Meanwhile, Lex intimidates Professor Milton Fine, but in retribution he
shows a dossier about the secret experiments that Luthorcorp is
performing in the campus of the Kansas University. When Clark sees Lana
at Chloe's room, he believes she is with a hangover; later, he goes with
Lana to a Halloween costume party promoted by the Tri Psi. When Lana
attacks Chloe, Clark discloses the truth about Buffy and her sisterhood
of vampires and tries to find a means to save Lana and Chloe when she
gets bitten by the evil vamp Lana. http://www.imdb.com/title/tt0703019/