In the final confrontation between Bill and the remaining townspeople, the Pines family must make a great sacrifice or be defeated by this otherworldly invader.
Grunkle Stan runs for mayor, so Dipper and Mabel try to help their gaffe-prone uncle become the perfect candidate.
Leonard, Raj and Howard clean out the office of the deceased Professor Roger Abbot and find a bottle of champagne meant to be opened when he made his first great scientific discovery. Meanwhile, Sheldon prepares his final episode of "Fun with Flags". Bernadette discovers that people are afraid of her.moreless
The kids discover there is a secret society in Gravity Falls.
In the Season 8 premiere, Amy and Leonard take a surprise road trip to Arizona to retrieve Sheldon, while Penny goes on a job interview at Bernadette's company, and Howard has problems wrapping his head around Stuart's relationship with Mrs. Wolowitz.moreless
Lester has an unexpected encounter. Meanwhile, Malvo changes course while a new investigation sends Molly down a familiar avenue.
Lester starts to feel like a new man while Molly is being compelled to close the case.
Ava has gained new friends, but is still in hot water. Meanwhile, Raylan hassles every crook in town in the hopes of arresting Darry Crowe.
With Stoick a prisoner of the Berserkers, Hiccup is forced to ask Alvin for help. At the same time, the Screaming Death draws near...
Po is suspicious when Shifu gets back together with his evil ex-girlfriend, Mei Ling.
Boyd targets the vulnerable Detroit mob, and Raylen gets involved with Crowe family members in Florida.
Tuffnut goes undercover to help the team rescue the Skrill from the Berserkers' grasp.
Chalky and Maitland hide out at his old mentor's, Oscar Boneau. Gillian contemplates selling her business for a life with Roy.
Still grieving for his brother, Al, in a fit of rage kills a policeman. Rothstein and Margaret unexpectedly run in to each other, and Willie drops out of college, enraging his father.
Certain that Alvin is planning an attack on Berk, Stoick institutes a ban on all dragon flying. Hiccup, certain that Alvin will be using his newfound dragon-training knowledge to bolster his attack, forms a secret “Dragon Flight Club” in order to train the kids to defend Berk against Alvin’s dragon army.moreless
Van Alden is ordered to keep an eye on the Capone's. Dr. Valentin Narcisse arrives in town with nothing but trouble with him. Eddie demands a promotion.
Rebecca gets to the bottom of the staff's fateful decision to air Jerry Dantana's special report on Operation Genoa.
Charlie, Mac, Jerry, Neal and Maggie conduct the first red team meeting for the story about Operation Genoa.
In the second part of the season finale, Li'l Gideon has managed to take possession of the Mystery Shack and unless the Pines family can somehow reacquire it, the fate of their beloved tourist trap is doomed.moreless
To get his hands on the deed to the Mystery Shack, Li'l Gideon summons Bill Cipher, a supernatural entity with the ability to steal a memory from a person's mind. This is part one of the two-part season finale.moreless
The gang search for Hiccup and Toothless, discovering that both are severe peril from the outcasts.
All the dragon species have multiple individuals except for Night Furies, Hiccup finds a secret page in the book of dragons revealing to him a secret island where other Night Furies live. Hiccup and Toothless embark on a challenging adventure to the island, but what may lie in his path, only one can guess.moreless
After Po saves a girl from a group of bandits, he finds out she is betrothed to the Dragon Warrior.
Because the vikings' homes can't support the weight of the dragons, they install metal perches above the homes. However when lightning keeps striking the village, Toothless gets blamed for angering the god Thor.moreless
As Capone's cavalry rides in, the war starts: with firepower on the one hand and scheming to alienate Masseria from Rosetti, Nucky fights to get his business back and keep his life. Gillian takes on Gyp with her very own weapons, but sees herself overpowered; Richard poses as a one-man-army and seems to have more luck saving what's important. Meanwhile, Margaret has run off to face difficult decisions – not only about her unborn baby, but also about the future of her marriage.