The 22nd-season opener begins with 12 celebrities, including Von Miller, Kim Fields, Geraldo Rivera, Mischa Barton, Antonio Brown and Paige VanZant.
Tommy and Kevin visit the Vermont factory where the house will be built, as general contractor Erik Kaminski watches the first shipment of framing parts leave. Richard meets Ed Akerley, who drills and blasts through the rock ledge to make room for the foundation. Norm and Erik watch as Scott McKenzy and his team build forms and pour concrete for the foundation.
On the North Shore of Massachusetts, homeowners Bill and April Harb begin building their dream home on a plot of raw land. The traditional farmhouse will look like it's been there for 200 years, but the building methods are at the forefront of innovation. Bill shows Kevin and Roger the site plan and walks them around the property, pointing out the first steps in the process. Norm and Tommy tour other factory homes built 5 years ago and 105 years ago, learning about the methods used for assembly. Back at the site, Kevin meets general contractor Erik Kaminski, who is leading the tree-removal process. Richard meets town official Brendhan Zubricki, who's performing a perc test to assess the soil.
J'onn J'onzz reveals the details of meeting Kara and Alex's father, Dr. Jeremiah Danvers, and assuming Hank Henshaw's identity. Also, Kara debates trusting someone new with her secret identity and Siobhan plots against Kara.
Damo and the firearms team tackle a gunman at a supermarket, while Gareth engages in a headlong, death-defying pursuit along roads, pavements and back allies. Elsewhere, an offender makes his getaway from Kev and Mark, and Jimmy Grieves faces down five angry men on an estate in Hartlepool.
The series focuses on an eccentric motley crew that is the Smith family and their three housemates: Father, husband, and breadwinner Stan Smith; his better half housewife, Francine Smith; their college-aged daughter, Hayley Smith; and their high-school-aged son, Steve Smith. Outside of the Smith family, there are three additional main characters, including Hayley's boyfriend turned husband, Jeff Fischer; the family's man-in-a-goldfish-body pet, Klaus; and most notably the family's zany alien, Roger, who is "full of masquerades, brazenness, and shocking antics."
Orga and the other Tekkadan members have finally reached Edmonton, but they are attacked by Gjallarhorn, which seeks to prevent Makanai from making it to the parliamentary session.
When their plans to get away are thwarted, Amy and Ty celebrate their first anniversary closer to home and Amy unveils a special surprise.
Diane, Cary, and Lucca defend the grieving father of a shooting victim (Blair Underwood) in a defamation suit over a billboard he put up describing a gun store owner as a murderer. Also, a romantic rendezvous between Alicia and Jason is interrupted when Alicia learns that Grace is being accused of plagiarizing her college entrance essay.
Hook's captivity takes a dark turn when Hades threatens to condemn him to the River of Lost Souls after Hook refuses to choose which three of his friends will have to remain in the Underworld. Meanwhile, Gold is suddenly eager to help Emma, Snow, David, Regina, Robin and Henry find Hook so he can return home to Belle; but in order to do so, he must find his ex-wife Milah in the Underworld and ask for her help. In Fairy Tale Land flashbacks, Rumple and Milah face a life-or-death crisis concerning their son, Baelfire, that forces Rumple to make a deal that will haunt him.
When Shelby's adventurous Grandma Rita comes to visit, the girls learn time travelers were responsible for setting up Shelby's grandparents and they jump to the 1950s to investigate.
"Voltage" is taking up all of Liv's time, but when The Dream is asked to reunite for a fundraiser, Liv is determined to make it happen. Meanwhile, Maddie tries to figure out where to go to college.
Abigail welcomes Becky back into her home, but soon faces a difficult decision. Jack and Elizabeth approach a new horizon in their relationship.
A young woman is ambushed and murdered in Utah's remote Big Cottonwood Canyon. A cryptic note leaves investigators wondering if her death was just a tragic coincidence or a brutal betrayal.
Two separate groups leave Alexandria for supplies, and while both worry over the future of the community, they will face immediate danger.
Sean moves into the Gallagher house as Fiona plans a traditional wedding.
Devon retreats to safety among old friends at the Chelsea Hotel as Richie continues to descend into a lifestyle of debauchery.