Archer visits Shran's icy homeworld to find an Andorian subspecies called the Aenar, to determine their connection to the marauder destroying ships in the region.
When Paulina witnesses Danny's ghost transformation, he fears the exposure. Imagine his surprise when Paulina swears to keep his secret - then becomes his girlfriend! Life is great for Danny, until he finds out that Paulina has actually been overshadowed by Johnny 13's girlfriend, Kitty, in her plot to make Johnny jealous. Danny reluctantly plays along to protect his own identity, but, when Kitty's welcome wears thin, Danny pleads with Johnny 13 to take her back. When Kitty abandons Paulina's body and goes back to her true love, Paulina resumes her indifference towards Danny Fenton - although she's now madly in love with Danny Phantom!
Relations between the U.S. and Russia are strained when Russian military leaders claim that the U.S. government has been compromised by the Goa'uld.
The cases of Harmon Rabb, former Navy fighter pilot, and his fellow lawyers of the U.S. Navy's Judge Advocate General's office.
The Nan Zhao kingdom is brainwashed by the chief of a moon-worshiping cult who forces the King to sentence his Queen (Sun Li) to death, claiming that she is a demon.
Baffled human wreck Dan Ashcroft watches in horror as his world is over-run with 24 carat berks, led by a strutting, brainless cock-of-the-walk called Nathan Barley, who, distressingly, has designs on Dan's sister Claire.
After an engineering student at CalSci is found dead from an apparent suicide, Charlie convinces Don to launch an investigation after he reads the student's thesis that asserted that the architecturally magnificent Cole Center in Los Angeles is structurally unstable. Although reluctant at first, Don and his FBI agents discover that the student's findings were correct and uncover a dangerous and surprising conspiracy. Meanwhile, Alan prepares for a first date and convinces Don and Terry to join them, hoping they might rekindle their old romance.
The avatar of the black hole, that trapped Dylan after the Nietzschean ambush, returns to get him back.
After postal worker Rosie Diaz goes missing during what seemed to be a regular workday, the team initially connects her disappearance to her cargo, which include $12,000 worth of the game Demon Storm, which all the kids were after. But when the team gets in touch with child protective services, they learn that Rosie recently had her foster children taken away after an anonymous abuse call. A search of her home uncovers a DVD containing child pornography, and the team starts to look at the case from another angle. Danny comments on Martin and Sam's obvious closeness, and wonders why they're keeping it quiet.
It's Valentines Day 2005 in O.C. when Sandy and Kirsten's conflict about Rebecca continues. Ryan tries to make peace with Caleb to spend Valentines Day with Lindsay. While Seth, Zach, and Summer head to San Diego in hope to make their Comic Book idea succeed Seth has a breakdown and ends up in a lonely state. Marissa and Alex take a step forward in their relationship while Julie returns from her trip in hope to reconnect with Marissa.
Grissom, Sofia, Sara and Greg investigate the disappearance of a woman coming home from a night out with a friend, her abandoned car found on the edge of a highway. Catherine, Warrick and Nick investigate the deaths of a hunter and his prey, a Kodiak bear.
Dr. Weaver meets her birth mother, but their relationship changes when Kerry reveals she is gay. Dr. Carter causes a commotion when he confronts a couple hoping to scam some painkillers.
On their way to Pacifidlog Town, the boat Ash and his friends are riding breaks down, forcing them to make a pit stop on Donto Island. It is currently the Donphan mating season, which they end up being separated from each other. May now has to make the ultimate decision: stay to find Max and miss the final contest before the Grand Festival, or leave alone for Pacifidlog Island trusting that Ash will find Max and come to the Contest for the next morning.
The Nan Zhao kingdom is brainwashed by the chief of a moon-worshiping cult who forces the King to sentence his Queen (Sun Li) to death, claiming that she is a demon.
Given the challenge of creating a 30-second commerical for Dove Cool Moisture Body Wash, the teams excel at coming up with concepts but struggle with executing the focuses of their commercials.
Joey accidentally makes a date with a reporter from "People" for Valentine's Day. He has the gang "accidentally" bump into him and his date at the restaurant to ruin the mood, but his plans backfire when she thinks he's taking their relationship to the next level. A drunken Alex shares some sexual secrets with Gina. After Joey sends Michael over to hit on a table of girls, Michael actually becomes "one of the girls."
When the Heffernans begin working out with the Ferrigno's, Doug secretly makes a pact with Lou so he can sit around instead of working out.
After the missing Claire returns with no recollection of what has happened since before she boarded the doomed Oceanic flight 815, Jack and Locke formulate a plan of defense against her kidnapper, the mysterious Ethan (guest-star William Mapother), who threatens to kill off the other survivors one by one unless Claire is returned to him. Meanwhile, the disappointment Charlie feels when Claire does not remember him triggers recollections of a woman he had let down in the past.