IT’S CLARK VS ZOD IN THE SEASON FINALE – Zod (Callum Blue) unleashes his army upon the world, forcing Chloe (Allison Mack) to call in reinforcements from old friends. Zod tells Lois (Erica Durance) he is The Blur and asks her to steal the Book of Rao from Clark (Tom Welling). Torn between Clark and The Blur, Lois asks Clark to come clean with her about everything but he refuses. Chloe (Allison Mack) and Oliver (Justin Hartley) attempt to reconnect Watchtower’s satellite system in order to fight the Kandorians but to Chloe’s horror, Oliver gets caught on site and disappears. Tess attempts to stop Zod but he leaves her clinging to life. Clark and Zod battle for control of Earth.
IT’S THE RETURN OF MARTHA KENT AND PERRY WHITE – Much to Clark’s (Tom Welling) surprise, Martha Kent (guest star Annette O’Toole) returns to Smallville with her new boyfriend, Perry White (guest star Michael McKean) in tow. Lois (Erica Durance) and Perry realize they are both working on the same story about the Red Queen, and decide to team up, which ultimately puts them in serious danger. Chloe (Allison Mack) helps Clark search for the Book of Rao, which they believe contains information on how to stop Zod (Callum Blue) and his army.
CHLOE AND TESS ARE TRAPPED INSIDE WATCHTOWER — Tess (Cassidy Freeman) breaks into Watchtower, triggering an elaborate security system that Chloe (Allison Mack) installed, ultimately trapping the two women inside. Chloe realizes that The Kandorians are downloading information about from the Watchtower server, which prompts her to make a drastic move. Oliver (Justin Hartley) confronts Zod (Callum Blue) and winds up clinging to life with a “Z” scorched into his chest. Clark (Tom Welling) realizes Zod has given his soldiers super powers.
DC COMICS’ CHARACTER MAXWELL LORD VISITS METROPOLIS — Lois (Erica Durance) investigates the early prison release of ex-District Attorney Raymond Sacks (guest star Dylan Neal) but he threatens her with a gun when confronted. The Blur (Tom Welling) saves her, but is captured on film by a delivery guy (guest star Dustin Schwartz) who plans to sell the photo to Sacks. Lois and Clark each attempt to thwart the delivery of the photo and run into Maxwell Lord (guest star Gil Bellows, “Ally McBeal”), a wealthy tycoon and Checkmate operative, who is trying to learn The Blur’s identity to eliminate him. Meanwhile, Chloe (Allison Mack) discovers Zod’s (Callum Blue) secret.
BRIAN AUSTIN GREEN RETURNS AS METALLO AND CLARK IS INFECTED WITH RED KRYPTONITE — Zod (Callum Blue) continues to pose as “The Blur” and asks Lois (Erica Durance) to investigate one of Tess’ (Cassidy Freeman) secret labs…. An explosion rocks the lab, and Lois is rescued by John Corben (guest star Brian Austin Green) who was a subject of multiple experiments. While investigating the explosion, Clark (Tom Welling) is exposed to red kryptonite. And infected Clark takes Zod to the Fortress. Tess turns to Chloe (Allison Mack) for help and they send in Corben to stop Clark from revealing all his secrets.
PAM GRIER (“JACKIE BROWN,” “THE L WORD”) GUEST STARS AND PHIL MORRIS RETURNS AS MARTIAN MANHUNTER — Tess (Cassidy Freeman) creates an elaborate hoax in order to kidnap Green Arrow (Justin Hartley) and delivers him to Amanda Waller (guest star Pam Grier), who tells him that that the government is recruiting him to serve his country. However, Green Arrow escapes before they can reveal his identity. After Oliver brings Clark (Tom Welling) and Chloe (Allison Mack) up to speed, the three investigate and Clark is surprised to find John Jones (guest star Phil Morris.) investigating Oliver’s kidnapping too. Clark senses that John is keeping information from him. Oliver and Clark are shocked when Tess reveals that Amanda is after something called “Watchtower.” Waller threatens to kill Chloe unless Clark gives her the names and locations of the rest of the Justice League.
DC COMICS’ CHARACTER SILVER BANSHEE INTERRUPTS A ROMANTIC GETAWAY FOR LOIS AND CLARK — Clark (Tom Welling) and Lois (Erica Durance) head out of town for a quiet romantic getaway, but their plans are thwarted when they run into Chloe (Allison Mack) and Oliver (Justin Hartley) at their Bed & Breakfast Inn. The couples’ awkward moment is interrupted by the arrival of the Silver Banshee (guest star Odessa Rae), who sets her sights on Clark and Oliver. Meanwhile, Tess (Cassidy Freeman) faces off with Zod (Callum Blue) with a surprising result.
ZOD IS SHOT — Bernard Chisholm (guest star J.R. Bourne), a doctor who died and was brought back to life by the Kandorians so they can experiment on him, escapes and kidnaps some Kandorians in order to prove aliens have invaded Earth. Bernard tries to get Lois (Erica Durance) to write a story validating his claim, but when Lois refuses, he kidnaps her too. In an effort to save his people, Zod (Callum Blue) poses as a reporter from the Daily Planet and uncovers Bernard’s secret lab. Clark (Tom Welling) arrives at the lab just in time to see Zod get shot.
LOIS MOVES IN WITH CLARK — It is Valentine’s Day and while Clark (Tom Welling) is out on a date with Lois (Erica Durance), he unknowingly becomes infected by gemstone kryptonite, which has magical wish-fulfilling properties. Clark mentions to Lois that he wishes they had a more traditional relationship,so Lois quits the Daily Planet, moves in with Clark and starts planning their wedding. Still unaware of his new power, Clark also casually tells Chloe (Allison Mack) he wishes she would spend more time watching out for him, so an infected Chloe takes his wish to heart and sets her sights on a new target – Lois.
METROPOLIS HOSTS A COMIC BOOK CONVENTION — DC COMICS’ CHARACTER ZATANNA RETURNS — Clark (Tom Welling) meets Zatanna (guest star Serinda Swan) at a comic book convention, where she tells him her father charmed a copy of the comic book “Warrior Angel” and it holds magical powers. A young man named Stephen (guest star Carlo Marks) steals the comic book and develops super powers, transforming himself into Warrior Angel and saving Chloe (Allison Mack) from a horrible accident. Meanwhile, Lois (Erica Durance) becomes jealous of Clark’s relationship with Zatanna.
DC COMICS’ CHARACTERS HAWKMAN, STAR GIRL AND DR. FATE FROM THE JUSTICE SOCIETY OF AMERICA MEET UP WITH CLARK AND HIS TEAM IN A SPECIAL TWO-HOUR EVENT; PAM GRIER GUEST STARS — A man named Sylvester Pemberton tracks down Chloe (Allison Mack) and tells her he knows about her team of superheroes and needs their help. However, before he can explain who he is, he is attacked and killed by Icicle (guest star Wesley Macinnes). Clark (Tom Welling) and Chloe’s (Allison Mack) investigation leads Clark to the former headquarters of the Justice Society of America where he meets up with Nelson AKA Dr. Fate (guest star Brent Stait), Carter Hall AKA Hawkman (guest star Michael Shanks) and Courtney AKA Star Girl (guest star Britt Irvin). Courtney pleads with Hawkman and Dr. Fate to help her catch the killer that is targeting their group but they are reluctant to resume their duties as superheroes. Clark, John Jones (guest star Phil Morris), Green Arrow (Justin Hartley) and Chloe team up to help the JSA stop Icicle before he murders another member of the group. Meanwhile, Lois (Erica Durance) receives a package from a mysterious agency called Checkmate, run by Amanda Waller (guest star Pam Grier).
NO LOVERS, NO ALLIES, NO DISCIPLES – INTRODUCING DC COMICS CHARACTER THE DARK ARCHER – Oliver’s (Justin Hartley) past comes back to haunt him in the form of The Dark Archer (guest star Steve Bacic), Oliver’s former teacher, who seeks revenge on his student by taking aim at Lois (Erica Durance) and Chloe (Allison Mack). Oliver faces down The Dark Archer after his former mentor kidnaps Mia AKA “Speedy” (guest star Elise Gatien) but is pushed to his limit and Clark (Tom Welling) races to stop him from making another deadly mistake.
BACK TO THE FUTURE — Tess (Cassidy Freeman) kidnaps Lois (Erica Durance) to find out where Lois went after she disappeared for weeks. Lois’s memory of the future depicts a Metropolis under Zod’s (Callum Blue) rule and Clark (Tom Welling) powerless under the red sun, while Chloe (Allison Mack) forms a resistance group with Oliver (Justin Hartley). After learning of these future events, Clark makes an important decision about Zod.
DC COMICS “THE WONDER TWINS” SHOW UP TO HELP CLARK CLEAN UP METROPOLIS – Superhero twins Zan (guest star David Gallagher) and Jayna (guest star Allison Scagliotti) show up in Metropolis to help The Blur fight crime but end up botching several rescues, landing Clark (Tom Welling) in hot water with the District Attorney’s office. Clark decides to come forward as the Blur to clear his name.
JOR-EL APPEARS IN SMALLVILLE — Jor-El (guest star Julian Sands) mysteriously arrives at the Kent farm searching for his son, Kal-El, but meets Chloe (Allison Mack) instead. Convinced the Blur is Jor-El, Zod (Callum Blue) enlists Tess’s (Cassidy Freeman) help in finding him to force him to reveal the secret to his powers. Clark (Tom Welling) realizes Jor-El is alive and on Earth and races to find him before Zod does.