Clark is surprised to see Martha on the news speaking at a pro-vigilante rally. However, surprise quickly turns to horror when he and Lois watch as Martha gets shot on national television. Meanwhile, Lionel reveals himself to the world and reclaims LuthorCorp from Tess and Oliver. Lois and Chloe decide to cheer Clark up by showing him videos from thousands of vigilante supporters professing their support for The Blur.
Sam starts to have flashbacks to a case he worked on with Samuel before he reconnected with Dean. Sam receives a mysterious text with coordinates to a small town, so the brothers decide to investigate. Dean is surprised when the townspeople start telling him some of the things Sam did while he lived there.
In Bethel, construction crews race to finish ERA's newest hanger before the unforgiving winter snows arrive. But when Jim flies in to inspect the progress, he is far from happy. In Unalakleet, fierce crosswinds blow John Ponts' tiny 207 all over the sky.
As the story shifts back to life “over there,” the absence of Colonel Broyles changes the dynamic of the Fringe Team as they investigate a bioterrorist armed with an insect that has a taste for human flesh. Meanwhile, alternate Olivia is reunited with her beau, and Walternate remains determined to save his world but discovers there are certain lines he will not cross.
Karl shares his thoughts on why insects are so deserving of his attention. Karl talks about his disappointment when learning about a killer octopus; what he would change in crabs; more stuff about insects. Karl's diary is also mostly about insects.
The Jedi remain stranded on Mortis, and the Son, aligned with the dark side of the Force, renews his efforts to convert Anakin as the Jedi prepare for a decisive confrontation. Anakin is stunned by images of his dark future. The Son promises him the power to avert this destiny. The Father recognizes that the Son has broken the rules of time. He wipes Anakin's memory of these future visions, and steals the Mortis Dagger to end the conflict. The Father impales himself, thus preventing the Son from stealing his power. The Son, stunned by this, is run through by Anakin. With all three Force-wielders destroyed, the imbalance in the Force disappears on Mortis. The three Jedi are transplanted back to the galaxy proper, apparently at the moment that they disappeared.
Candace switches places with a princess who looks exactly like her, while the real princess helps the boys build a giant jukebox filled with live bands.
Van Pelt's actions are called into question when a witness is murdered while she is assigned to his protection.
Tom tries to get back at Ron by going out on a date with Ron's ex-wife Tammy, while Leslie tries to protect Ron from falling prey to her charms. Meanwhile, April is assigned to work with Chris.
Todd leads anger-management training to improve the staff's customer-service skills, but he's surprised to learn that Gupta is in need of the most help. Elsewhere, Madhuri receives a Valentine's Day gift from a secret beau.
Stefan and Elena get away for what they hope will be a romantic weekend at the Gilbert family lake house, not realizing that they’ve been followed. Jenna starts to worry that Alaric isn’t being honest with her. Jules explains the importance of the sun and moon curse to Tyler, but leaves out an important detail. Damon attends a tea at the Historical Society in order to talk to Elijah, but Elijah isn’t giving up any secrets. With help from Caroline and Jeremy, Bonnie uses deceptive measures to get shocking new information out of Luka. Finally, Tyler offers Matt some relationship advice.
Mini is under threat. When Grace brings Franky into the charity fashion show, Mini sacks them both, and re-imagines the show in her own image to cement her power.
A wealthy donor to the university makes Leonard consider how far he's willing to go for the sake of science.
On Valentine's Day, Troy and Abed compete for the attention of an assistant librarian, while Britta tries to show she's open-minded about lesbians.
A BMX rider’s remains are discovered on the roof of a warehouse after a failed bike stunt. While Booth and Brennan interrogate the victim’s fellow riders, Hodgins and newly mellowed “squint” Fisher identify the numerous fractures in the victim’s skeletal structure, and Angela recreates the series of events that led to the fatal accident. Meanwhile, Sweets turns to Booth for advice about his relationship with Daisy, and Booth makes a decision about his relationship with Hannah.
The staff grows increasingly uncomfortable with Michael and Holly's PDAs. Jim and Pam regret a champagne luncheon. Andy horns in on a romantic treasure hunt Gabe arranged for Erin.
Follows at-risk youths in prison intervention programs, revisiting them a month later to gauge program impact after confronting realities of incarceration.
The Crime Scene crew investigates the gruesome murder of a high-powered, widowed lawyer, while Ray faces that it is time to move on from his old life.
Jack and a very pregnant Avery take a romantic break in Canada. When Avery goes into labor, the power couple desperately scramble to not give birth to a Canadian. Meanwhile, Liz's getaway with Carol gets grounded, literally, when their plane collects dust on the tarmac. And Tracy is an EGOT winner, but with that comes overwhelming demands.
Charlotte's attacker, Lee Henry, arrives at St. Ambrose Hospital, injured by his girlfriend and in need of urgent care, and Sam and Charlotte must decide whether or not to save his life. Meanwhile, Susan's health takes a turn for the worse, and Addison's mother, Bizzy, begs her daughter to do everything in her power to help.