When Zod and the Kandorians launch their brutal attack on Earth, Chloe calls in some old friends to join the fight against the aliens. Clark and Zod face off in an epic battle for the control of Earth.

Much to Clark’s surprise, Martha Kent returns to Smallville with her new boyfriend, Perry White in tow. Lois 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 helps Clark search for the Book of Rao, which they believe contains information on how to stop Zod and his army.

Tess and Chloe end up trapped inside Watchtower; Oliver decides to confront Zod; Clark learns that Zod’s soldiers have superpowers.

Former DA Raymond Sacks threatens Lois after he is released from prison; Chloe discovers Zod’s secret.

Zod continues to pose as “The Blur” and asks Lois to investigate one of Tess’ secret labs. An explosion rocks the lab, and Lois is rescued by John Corben who was a subject of multiple experiments. While investigating the explosion, Clark is exposed to red kryptonite. And infected Clark takes Zod to the Fortress. Tess turns to Chloe for help and they send in Corben to stop Clark from revealing all his secrets.

Tess creates an elaborate hoax in order to kidnap Green Arrow, and delivers him to Amanda Waller, 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 and Chloe up to speed, the three investigate and Clark is surprised to find John Jones 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.

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. Kevin Fair directed the episode written by Genevieve Sparling.

Bernard Chisholm, 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 to write a story validating his claim, but when Lois refuses, he kidnaps her too. In an effort to save his people, Zod poses as a reporter from the Daily Planet and uncovers Bernard’s secret lab. Clark arrives at the lab just in time to see Zod get shot.

It is Valentine’s Day and while Clark is out on a date with Lois, 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 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.

Clark meets Zatanna 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 steals the comic book and develops super powers, transforming himself into Warrior Angel and saving Chloe from a horrible accident.