Now beginning its seventh season, this new interpretation of the enduring Superman mythology and its classic characters blends realism and adventure into an exciting action series. This season, Clark Kent (Tom Welling, "Cheaper By the Dozen") and Lex Luthor (Michael Rosenbaum, "Kickin' It Old Skool") have become the sworn enemies that comic book aficionados have always known and loved.

Season seven brings exciting guest stars from the Superman mythology, including Dean Cain ("Lois & Clark") and Helen Slater ("Supergirl"), plus storylines of Krypton and the El family. This season Clark will discover more about his home planet, who his parents were, what his future holds and why he was sent to Earth.

In last season's finale, Lana (Kristin Kreuk, "Partition") confronted Lex over his lies about the baby, confessed she was still in love with Clark and told Lex she was leaving him. Lana turned to Clark for comfort but when she revealed that Lionel (John Glover, "Brimstone") forced her to marry Lex, Clark went after Lionel to stop his machinations once and for all. However, Martian Manhunter (guest star Phil Morris) stepped in to explain Lionel is on their side and together they've been working to stop Lex from finding the last Phantom Zone escapee as Lex needs the wraith's DNA to fuel his army of super soldiers. Meanwhile, Lois (Erica Durance, "The Butterfly Effect 2") had her own agenda for bringing Lex down and snooped around his base at Reeves Dam. When an armed guard confronted her, Lois was stabbed and left for dead. She called Chloe (Allison Mack, "The Ant Bully") for help, but her cousin arrived too late and found Lois. As a despondent Chloe clutched Lois, her latent meteor power was revealed. Chloe healed Lois, but took on her wounds and collapsed. Lana's car exploded when she tried to leave town, and the police confronted Lex at the dam and arrested him for murder. The wraith attacked Clark, creating Clark's ultimate enemy -- Bizarro. The two super men fought and their struggle caused Reeves Dam to break, flooding the area and leaving everyone in peril.

This season Clark will face his biggest battles yet. Bizarro is intent on destroying him as only one of them can survive. Clark has also lost the love of his life to a horrific accident; his adoptive mother Martha (Annette O'Toole, "Superman II") has left for Washington; and the biggest trial for Clark comes in the form of his nineteen-year-old female cousin, Kara AKA Supergirl (newcomer Laura Vandervoort).

When the dam broke, Kara's spaceship was released from the earth. She had been in suspended animation for years, having in fact left Krypton as a teenager with the intent to look after young Kal-El after he arrived on Earth. However, as she didn't age when inside the ship, she now finds herself younger than her cousin and he's now the one looking after her. Kara is fascinated with Earth's culture and has difficulty remembering to hide her powers from the world. Her youthful abandon puts her in several precarious situations that land her in hot water and directly onto Lex's radar.

Lana's death appears to have made Lex reevaluate his life. He willingly goes to jail for the murder of his wife and begins to help those in need instead of exploiting them. The secret army has been dissolved, but he begins a new fixation on Kara and her ship, although he doesn't immediately realize the two are connected. Lex also continues his awkward relationship with his father Lionel. Neither trusts each other and Lex is all too aware that Lionel has many secrets and had a part in taking down Lex's secret army. The two cunning Luthors continue to circle each other warily, each waiting for the other to make a move that could prove the end for father or son.

Another who doubts Lex's new charitable attitude is Lois Lane. After the harm the secret army caused her family and friends, Lois has sworn to find a way to bring the billionaire down. Lois also takes a big step in her career when the new Daily Planet editor Grant Gabriel (guest star Michael Cassidy) is charmed by her take-no-prisoners attitude and hires her as his star reporter. While jumping at the chance to show off her investigative reporter skills, Lois feels bad about stealing some of her cousin Chloe's limelight.

As if competing with Lois for the new Daily Planet editor's attention wasn't bad enough, Chloe discovers that in addition to hiding Clark's true identity from the world, she must also now cover up her own secret. She fears confessing her new power to Jimmy (Aaron Ashmore, "The Christmas Cottage") as she believes it will drive him away. However, her continued evasiveness about her investigative stories and her relationship with Clark leads Jimmy to believe he and Chloe may not be the destined duo he thought they could be and he begins to look at Kara in a new light. As much as she's also prodded Clark to confess his secret to Lana over the years, Chloe finds that when it comes down to it, she can't tell Jimmy she's meteor-infected and realizes this may cause her to lose him forever.