Magnus is revived to answer Ranna's questions and soon figures out that despite Ranna's efforts the city is in great deal of trouble and the fall of Praxis could also threaten the surface world however Magnus is able to help. Magnus and Ranna makes an understanding to help and she revives rest of the gang. Magnus manages to save the city with the help from Gregory Magnus meanwhile Will tries to breakdown Adam's plan that can cause huge trouble.
Amy lets her temper get the best of her when Mr. Piper refuses to admit he was wrong. P.J. decides to have a man to man talk with Skyler's old beau. Charlie's first ballet lesson may be her last after Bob breaks one of the class rules.
Complications and distractions abound when the CHAOS agents infiltrate an arms dealer’s Russian compound with the intent to capture him. Posing as lawyers, the agents must put their improv skills to work.
Toby goes undercover to help expose the identity of a hacker known as “Jericho-11” in a cyber crime investigation involving large-scale identity theft.
Merlin sets off on a journey to find a sword suitable for a king by seeking out a legendary sword maker. A conversation with Guinevere changes Arthur and he begins to assert his power by sparring with Leontes.
The ladies participate in a marriage-equality march over the Brooklyn Bridge, yet there's drama with these mamas when tension heats up between Sonja and Alex. Elsewhere, an offensive remark delivered by Ramona spreads back to Cindy.
As cancellation looms for "TGS", Liz snoops with Kenneth to find a missing Tracy. Meanwhile, Jack works his magic to ensure the financial success of Jenna's newest endeavor; and an emasculated Pete organizes a manly contest for the writers and crew.
When a 13-year-old girl is admitted to hospital after a road accident, Monroe believes there is little chance of saving her and an operation could leave her severely damaged. However, her father begs him to operate and give her a chance to live - whatever the consequences. The trainees face their final assessments and Shepherd considers leaving following his break-up with Bremner.
Owen returns with information on one of Percy’s black boxes. Nikita returns to London with him to retrieve it but notices that Owen is acting strangely. Owen tells Nikita that he wants to release the contents of the black box and when Nikita disagrees, he turns on her. Meanwhile, Percy finds out Nikita is in London and dispenses Michael to kill her. Also, Amanda overhears Jaden arguing with Alex about the escape tunnels so she hooks Alex up to a lie detector to get the truth out of her once and for all.
With new challengers on the swamp, the race to catch the biggest gators quickly has never been tougher. But more speed means more danger. Legendary Cajun Troy Landry, and his son Jacob, are struggling. Without their old sharpshooter Clint, the gator count is beginning to lag, and the boys are growing more and more frustrated.
A contestant is eliminated; Rihanna performs; Kelly Clarkson and Jason Aldean perform.
A "Bowled Over" obstacle brings full body contact to bowling. Contestants also face the Chocolate Shop and an Arabian Nights-theme challenge.
After the double Tribal Council, Malusi openly confronted the tribe about a lack of unity in the vote. He received an apparently random vote from Bonnie, when the rest of the tribe picked off Harry. Bonnie admitted that she voted for Malusi, leaving him rattled and doubtful about the impending merge. At Goma, Sean noted how, at this situation, Raituhn can pick off the remaining four Goma members off one by one at the merge, to Alison's frustration.
April and Andy host a dinner party for the Parks Department. Meanwhile, Ann tries to move on from Chris at a singles' party.
As the high school prepares to throw a “1960s Decade Dance,” Elena starts receiving disturbing messages from Klaus via an unusual source. Bonnie tries to reassure Jeremy that she is strong enough to help Elena, but a worried Jeremy asks Stefan for advice. Caroline talks Matt into taking her to the dance. Expecting Klaus to show up at the dance, Damon and Alaric attend as chaperones, but Klaus is playing a complicated game that keeps them on edge. Finally, Damon comes up with a new plan of action that shocks and upsets everyone.
Tonya's mom visits once again, and Todd is determined to make a better impression this time around. But Todd soon discovers a secret about the woman that complicates his goal. Elsewhere, Madhuri reads her coworkers' palms.
Jeff is suspicious of Pierce's engagement to a pretty classmate. Troy invents a childhood trauma to impress Britta, and Abed challenges a professor.
Archer's search for his father's identity leads him into hot water. Agent Barry Dylan is sent to rescue Archer.
The remains of a mythbuster television show host are found in the wilderness appearing to have been killed by the mythic Chupacabra, a reptile-mammal hybrid creature whose existence has not been confirmed. The team soon learns that the victim traveled to the remote West Virginian area to debunk the Chupacabra myth, and they interrogate possible suspects, including a rival wilderness-channel host/cryptozoologist/pet psychic. But when a tape is recovered at the crime scene and peculiar tooth marks are found in the victim's remains, the team learns details about the victim's demise that challenge the original theories surrounding his death. Meanwhile, recovering alcoholic squint Vincent Nigel-Murray makes amends with each member of the team and makes some surprising confessions.