Perry misses his 100th battle against Dr. Doofenshmirtz when Candace takes him to the Charity Pet Wash with her. Perry's absence goes unnoticed when the zookeeper's typical platypus at the Danville Zoo stops Dr. Doofenshmirtz's plan to zap his brother with his "Least Likely-inator." Meanwhile, the boys build a fun house Phineas and Ferb style.
When Candace discovers that Phineas and Ferb have invented a computer that can answer anything, she asks it how she can finally bust her brothers once and for all. Meanwhile, Dr. Doofenshmirtz loses the key to his latest invention, the "All Purpose-inator," and Agent P must find it before he does.
When Zuzu fails to play guitar well, Owl suggests they search for the 'golden guitar' found in the Desert of the Crazy Sun.
After Owl suggests that Mo's precious collection would be safest in a museum, Poppy takes them to the Moon in her rocket.
Tsubaki from the Student Council tells the Sket-dan they're going to be disbanded. In order to prove the Sket-dan's effectiveness, Bossun takes on a request to put on a play for a local preschool. But the Student Council also takes on the same request, and the battle is on!
Morning on Day 24 was bitter for the entire Eku tribe. Alison felt disgusted with Hykie and Bonnie's confidence in their alliance, Bonnie was hurt by MXO's preacher and preacher's wife comment that he directed to Hykie and herself, and Letshego highlighted that she was the odd one out amongst the Final 5. MXO especially got on Bonnie's nerves during the day.
Teo betrays Teresa and becomes a rat for the DEA, while The Mexican plans a shipment for the Russians.
Personal and work pressures are adding up and have Meredith visibly on edge, Owen conducts formal interviews for the Chief Resident position, Cristina grows increasingly defiant, Alex and Lucy's undefined relationship gets tested, and Jackson suddenly backs out of the Webber's diabetes trial.
The ladies bask at a mask bash when Sonja hosts a masquerade ball. In addition, Cindy goes to the dentist with Jill in tow, but Jill adds some bite by offering way too much input. And Ramona throws a wine party, but gossip spills over.
After years of pursuit and a countless number of murders, Langston comes face-to-face with serial killer Nate Haskell inside the house where his killing spree began.
When Betsey returns to the ER for a second visit, the concerned Oceanside doctors start investigating the foster family. Amelia struggles to stay sober while Naomi announces a life changing decision affecting her family.
In Birmingham, Detectives Eric Torrence and Henry Lucas investigate the murder of a 31-year-old male found dead in a field. But with a tight-lipped community where street law is paramount, finding someone to talk is the team's biggest challenge. As the clock winds down, will the community pull through and bring the killer to justice? Then, in Charlotte a man is chased down and killed in front of his nine-year-old son. Detective Blair Fitch is shocked to discover the killer was getting even with someone else. The case takes a surprising turn and leads detectives to New York where the suspect turns up in relation to another murder.
Percy makes a move to take over the CIA, Alex goes rogue, and Michael gets trapped inside Division making him unable to help Nikita, who may have to pay with her life for helping Alex.
The search for the missing locket continues with the investigation turning to Christopher Biggins for answers. Meanwhile, we find out what happened to Robert and Kerry as we return to the mysterious cottage in the woods.
The driver of Wratten's car is identified, and Gabriel and Joseph Bede are desperate to get to him first, but they find themselves in a three-horse race with a shadowy figure that always seems to be one step ahead of them.
As a severe storm nears Southern Louisiana, the hunters are preparing for the worst. With his sharpshooter Liz still recovering from an injury, Troy and Jacob pit themselves against the gnarly weather. Troy uses an old Cajun strategy, employing a special bait to lure the gators despite the storm. Joe and Tommy are not on the same page.
A finalist is sent home; premiere of the video for Steven Tyler's ``(It) Feels so Good''; Jordin Sparks performs.
Faulty Bridge, Twister Mill, Wipeout Laundromat, Scareousel and Super Tramp Challenge are among the obstacles faced.