Kitty decides to throw a neighborhood barbecue after she wins a year's worth of hot dogs. Eric is upset when he learns Casey is invited, so he devises a convoluted plan to make Casey look bad in front of Donna. Kelso and Jackie seek relationship advice from Cosmo to uncover the root of their problems. Fez can't get past second base with Rhonda; Hyde's fed up with how the guys talk about the girls all the time.
Ben takes the news of his diagnosis pretty well - at least better than his sister Jordan and J.D. Remarkably, it is Dr. Cox who is the voice of reason and compassion, until his own fears get in the way. Meanwhile, Turk and Elliot have their own issues to deal with. Turk is upset because he wasn't chosen to assist on a difficult surgery and Elliot is criticized during rounds by Dr. Kelso for the 100th time.
After a plane crash, two opposing half-brothers find themselves on an amazing lost island where enlightened pacifist humans and intelligent talking dinosaurs have created a utopian medieval society. But imminent disaster approaches.
Guilt feelings over a sexual liaison with Roz plague Frasier, who heads out to her family reunion in Wisconsin to make amends.
An unreliable witness and an overzealous detective hinder a murder investigation; a con artist scam leads the squad to a sex-slavery operation; McDowell agrees to join Sipowicz and Theo at a theme park.
Burtton turns his law firm over to Sen. Nathan Calldwell, he gets ready to be a federal Judge.
As their high school graduation approaches, the gang must come to terms with their expectations for the future, while joining together to thwart the FBI when they discover that several members of the group are under surveillance. Meanwhile, Liz begins exhibiting even more alien-like powers, that cause her to see visions of their future - including their deaths.
Jack delivers a cell phone that is unknowingly rigged to explode to Palmer. Kim manages to escape. The identity of the real mole inside CTU is exposed.
Lorelai is about to graduate from business school, so Rory secretly invites guests to her graduation ceremony. Rory makes a trip to New York.
As Dutch uncovers a lead to the serial killer, a reporter's questions force Aceveda to explain problems he thought were buried fair in the past, while Vic assists Connie as she tries to quit crack cold-turkey in a desperate attempt to keep her son, leaving the other Strike Team members to investigate a strip-club mugging ring on their own.
After an explosion Lana finds herself getting visions of a serial killer...and his next target is Chloe. Meanwhile Lex and Roger look further into the meteor shower and determine that something besides meteors hit Smallville that day.
With his entire family inside the Crystal Ark, Dar is faced with his final challenge.
After Nikki's friend, Bernetta Campbell, wins the lottery, she quits her job working for Magic Johnson at the Magic Johnson Theatres and recommends Nikki to become the new theater manager. But Nikki's bossy attitude leads her staff to quit. Meanwhile, Professor Oglevee has a date with actress Kenya Moore.
Lynn moves in with William, and soon suggests that they take their minds off their recent break-ups by becoming ""sex buddies."" Joan is adamantly opposed to this, and warns that it will soon blow up in their faces. Shelby recommends that Toni adopt a more ""honest"" hairstyle to try to improve her business. Maya has difficulty finding child care for Jabari in the aftermath of her mother's move.
The feud between Debra and Marie continues. Ray realizes that he can use the feud to get Debra to do almost anything for him, dragging Frank into exploiting the situation with Marie.
With Jordan still at the psychiatric hospital she agrees to look into a triple homicide. Typical Jordan gets herself in over her head and Woody is there to lend a helping hand…again.
Against Carrie's commands, Doug takes $100 from the "emergency fund jar" to bet on a boxing match. When he and Deacon win $5,000, Doug realizes he can't let Carrie know he won big or she'll realize he stole the money. Deacon and Doug set out to burn it all off in a day of luxury spending. Meanwhile, Carrie is offered a job from the owner of the firm and when she finally works up the nerve to give notice, the offer ends up not being as firm as she thought.
An abortion doctor is executed by an American pro-life terrorist; Mary Kane. An informant reveals that this is just the tip of the iceberg as Mary has 20 more bombs and plans on using them. To make matters worse she has started training more pro-life groups, within the UK.
Tonya turns on the lights and a shocked Flex wakes up. She tells him that she thought he was a burgular. After that they turn off the lights and make love all weekend. By Monday Flex can't find his keys because Tonya has hidden them. She wants to have more sex from Flex but he has to go to work, so he spots his keys and runs the minute she's not looking. When he's finished at his job and gets home from work the whole house has romantic items in it. Breanna says that it's from Tonya and she has declared off her engagement from her fiance. Flex goes to Tonya immediately and tries to reason with her but she won't listen. When he leaves she throws his picture at a wall. Flex then tries to woe another woman but the waiters along with serenaders keep doing things that remind Flex of Tonya then the main waiter says that these were all compliments of his wife Tonya. That puts a dent in Flex's evening and he suddenly remembers why he didn't commit to Tonya, because she's litterally crazy about
Two days before Challenger's latest attempt to leave the Plateau by balloon, Veronica and Finn encounter a strange phenomenon and are briefly transported into the post-apocalyptic future of New Amazonia. Soon after, Roxton finds himself being chased by 17th-century Conquistadors while Marguerite is captured by Druids determined to sacrifice her in order to avert a mysterious storm which is fast approaching. As different planes of reality continue to collide, Veronica at last realizes the time has come for her to fulfill her destiny as Protector and wield her mother's pendant-the Trion. But even as she prepares to sacrifice her life to save her friends, she does not know if she's made the right decision-for once the power of the Trion is unleashed, will it save the Plateau, or destroy it… ?