Maddie has her prom at the Tipton Hotel after realizing there is nowhere else to have it. Zack thinks that he will be her date, but ends up getting dissapointed. Cody starts to act like a mime.
The series concludes with the gangbangers taking out their assault on the 55th Precinct. After some grenade explosions, the precinct is destroyed. Cruz knows that Marcel Hollis is behind the attack, and she takes his life, as well as her own. Carlos proposes to Holly, and they are married. Everyone receives their reassignments, and Sully retires. In the last few moments, Sully narrates a look into the future.
Kibre prosecutes the man accused of murdering a transvestite, but she runs into trouble when his father confesses to the same crime.
Numbuh 5 goes to the planet Mars to pick up some marshmallows as part of dessert with her family after dinner. But upon her return, she discovers her family and friends are being menaced by an old foe who now is a mere shell of his old self.
When Mac accidentally imagines another friend, Bloo suffers sibling rivalry with the newly arrived and very odd Cheese.
Sandy, Seth and Ryan travel to Miami to visit the Nana after she tells Sandy she is getting married. Unable to go because of work, Kirsten is left on her own to deal with her feelings for Carter. Trey misinterprets Marissa's friendship; Zach invites Summer to a home-cooked dinner.
Seth and Zach declare themselves rivals for Summer's affections; Marissa is still reeling from being nearly raped by Trey; Sandy confronts Kirsten when her drinking problem becomes very apparent; Caleb hands divorce papers to Julie.
When Grace convinces Karen to accompany her to her father Martin's birthday bash, the situation turns awkward when it is just the three of them. Struggling to gain the attention of her seemingly aloof father, Grace tags along with him to the golf range in hopes of scoring some quality bonding time. Meanwhile, Karen keeps herself entertained with Martin's buddy, Burt. Meanwhile, excited about the date that Jack has arranged for him, Will discovers the true meaning of the phrase blind date.
A man (Alan Rosenberg) whom Catherine flirted with at a bar reappears in her life as a suspect in a murder investigation.
Morris is named the new chief resident, which makes nobody really happy, except Morris. Meanwhile Luka and Sam are having communication problems, Carter gets a promotion Susan really wanted and Ray finds out a 14-year old who always comes in for free drugs has been raped.
The preliminaries are over and now the Hoenn League Championships begin in earnest. The qualifying round is all double battles and Ash goes to watch Morrison's match against muscleman Gavin.
Danny is skeptical when the pregnant girlfriend of his missing estranged brother, Rafael ""Rafi"" Alvarez, and mother of their 9-year-old son, tells him that Rafi has transformed himself into a responsible family man, who recently obtained a loan to open his own body shop. But Danny's investigation uncovers that Rafi has been seen with a convicted car thief, and the large sum of cash he'd been flaunting for his purchase of a body shop didn't come from the bank. Though Jack makes the point that Rafi may have legitimate explanations for the suspicious circumstances, Danny braces himself for the very real possibility that his brother may have put himself in harm's way.
In the sixteenth week of the Apprentice job interview, the final three candidates are faced with actual interviews - not by Mr. Trump, but by top executives from four of America's largest corporations.
During a game of ""Reality or Risk"" (a variation of the classic ""Truth or Dare"") Alex is asked to reveal who her best friend is. When Alex refuses to say whom she likes better, Sam and Clover start to get way competitive – vying for Alex's affection! Meanwhile, a British tabloid journalist has invented a truth serum gas that he uses to gather scandalous information from celebrities for his new tabloid, RagMag. When the spies try to stop him, Alex ends up getting gassed and reveals the existence of WOOHP. The journalist's plans suddenly change with this new information and use Alex to take over WOOHP.
After another funeral, tempers rise as the survivors' suspicions of each other grow, and an unlikely survivor vows revenge. The events that landed Sayid on Flight 815 play out as he engages Locke in a psychological game of cat and mouse to uncover the truth about the mishap that claimed Boone's life.
Checking out a crater in a cornfield, Clark and Lana discover a baby with no parents and take him back to the Kent farm. However, when the baby, Evan, ages from a newborn to a 7-year-old in less than a day, it becomes clear he is aging at a rapid rate and they turn to Lex for help. Meanwhile, Genevieve suspects Lex has the Chinese Kryptonian artifact and orders Lionel to either recover it...or risk putting Lex in danger of his life.
Jack's illness has caused him to hallucinate about a cure. Sydney must recreate the time when Jack was working for the CIA and hid the only man who might be able to help him now. For this, Sydney must play her own mother. Meanwhile, Sophia moves in with Sydney and Nadia.
Kelso considers what to do about his relationship with Angie, and comes to the conclusion that it's time to break up, but he's not sure how to do that. He seeks some advice from Jackie on the matter, but ultimately, the decision is taken out of his hands. Eric is shocked to discover that his college tuition fund is gone, and has to find another way to raise the money. His solution is one that Kitty, Red and Donna have differing opinions on.
Just as Joey and Sara become exclusive, Joey has to do a love scene with Carmen Electra for Deep Powder. Meanwhile, Alex struggles with the knowledge that Eric kissed another woman.
Seven years ago, a thirteen-year-old girl named Amber Bryce went missing, and suspicion fell on her boyfriend, then-seventeen-year-old Curtis Horne. When Daisy Thorpe, who had become obsessed with getting justice for Amber's death, also ends up missing, the team is called in to investigate. While Martin and Danny work from the office, Sam and Jack work in the field, starting their investigation with the local cleric, Amber's father, and trying to find out why Curtis Horne has stayed in town all these years. While Vivian is home having troubles with Reggie, Martin makes a decision about his relationship with Sam.