A new gang has rolled into Chatsworth with an unlikely mission - to save the souls of the community.
Max goes to public school, a move that worries Kristina; Sarah and Mark's relationship progresses while Haddie and Alex's takes a hit; the stress of adoption takes a toll on Julia; and Adam rethinks his career path.
Alan and Jake meet Walden Schmidt, a broken-hearted billionaire.
Nancy and Silas face off over who controls their drug business, while Andy tries to mediate; Shane goes to lengths to win back Detective Ouellette's trust, while Doug tries to keep the SEC distracted from his hedge fund's illegal activities.
While McGarrett sits in prison awaiting trial for the murder of the governor, Danny brings him a surprise visitor to help clear him. Meanwhile, Kono is suspended from the force, pending an internal investigation.
Hijackers commandeer a passenger jet to bargain for a prisoner release. The lives of forty passengers and crew hang in the balance of negotiations over the prisoner, a relative of the terrorists. An ambitious passenger irks the hijackers, when she starts to text the police. Team One eventually storms the jet at the city airport. Stressed, Parker agonizes over shooting the hijackers.
Benson tries to get back Mordecai and Rigby's stick hockey table when he wrongfully gives it away.
While Barney prepares for his wedding to a mystery bride, he and Ted reminisce about Punchy’s wedding, including when Marshall and Lily announced they are having a baby. Meanwhile, Robin considers telling Barney she has feelings for him.
In the season finale - It's chaos in Eureka when an energy beam rips through main street but the Astraeus launch must go on...with or without Eureka intact.
Myka and Pete deal with a plague of zombies in Ithaca, while Claudia deals with a new romance, a prophecy of death, and a rejection from a friend.
The DoD imprisons Rosen and his team after they suspect that one of the members is a Red Flag traitor.
Marshall gets a great job offer that he fears may be scuttled by a social media background check. Ted needs a date for the Architects Ball.
While trying to escape Snotty Boy, the animals run over Snotty's clown father. His dad survived, but has lost a lot of hilarity and Pig takes him into surgery. Otis disguises himself as Snotty's father to distract him while he recovers and becomes a cool dad to Snotty Boy. Only Snotty comes to love and admire Otis in a way he never did for his lame clown father. Otis has to think fast before he ruins this miserable family.
Driving through Michigan in a freak spring snowstorm, the prospects look bleak until the guys spot an interesting old Cadillac for sale. With their picking senses twitching, they stop to see what else is on the property. Frank falls hard for a deluxe Model A roadster. But to seal the deal, he's got to talk to the boss and she's not at home! Passionate about revitalizing Detroit's city core, Joel owns an entire neighborhood of 50 adjoining properties, including a 50,000 square foot warehouse that's jam-packed with cool cars, old signs and architectural salvage. It's a picker's dream and the guys dig deep to see what they can uncover. Collecting on a monumental scale, father and son duo Jerry and Jerry's 40-acre property includes a life-size model train town and over 1,000 classic bicycles. The only problem is they've got a hard time selling and their prices are frozen in time! After dropping thousands of dollars on the Model A, Frank faces the appraiser's verdict.
Detective Beckett fights for her life as Castle, plagued by guilt over his role in the events, struggles to uncover who's behind her brutal shooting. Meanwhile, back at the precinct, Ryan and Esposito have to adjust, as Victoria "Iron" Gates becomes the precinct's new uncompromising Captain.
The GP returns to his former post at the surgery after the departure of Dr Dibbs, agreeing to stay until a replacement is found. He persuades a reluctant Louisa to move into his house so he can help raise their son, and suggests they could all move to London together in the future. Martin then delivers the eulogy at his aunt Joan's funeral and speaks to her sister Ruth, who proves to be just as cantankerous as he is.
This trip Guy's heading all over the country for a taste of the south. In San Francisco, a whisky bar putting their own spin on a po' boy with avocado and fresh crab mayo. In Bradenton, Florida, a Cuban place where the classic holiday roast comes stuffed with chorizo. And in Denver, an old Victorian home turned restaurant, where they're scratch making southern favorites from peach cobbler to gumbo with cornbread.
Adrienne debates moving her basketball team and brings Kim along for the dramatic decision.