A battle erupts over a shirt after Max introduces Caroline to shopping at thrift stores; a sarcastic street artist flirts with Max.
Milli, Geo, and Bot are going to see the King of Numbers who loves numbers more than anyone else in the world. But Zilch the Wizard imprisons the King in his castle and throws the three keys needed to release the King.
Otis finds a giant chicken egg and decides to hatch it so they can have a fifth for polo. The giant chicken egg turns out to be that of a dinosaur, which proceeds to wreak havoc wherever it goes. The animals want to get rid of it, but Otis has paternal feelings and begs the animals to give him a chance. They relent, but things truly go awry when the dinosaur quickly grows a thousand times its size and falls in love with Mrs. Beady.
Alan prepares Walden for a date with Bridget, while Jake decides to emulate Walden and drop out of school.
Pete and Myka race to stop Sykes from using his own cache of artifacts to destroy them and the Warehouse.
At his mentor's request, McGarrett persuades Max to redo the autopsy on a SEAL, thought to have committed suicide, in order to investigate his murder. Meanwhile, Chin Ho worries about Kono hanging out with a group of dirty ex-cops, including Frank Delano.
As Sykes begins his end game, the agents discover that Helena is still alive... and teaching high school literature. Meanwhile, Jane reveals the full extent of her plan but one agent will lose their life carrying it out.
Nate reconnects unexpectedly with Diana, who offers him an exciting opportunity. Serena forces Charlie to decide which world she wants to embrace. Dan seeks out Chuck’s help to stop the publication of his book, but discovers it is Chuck who needs the help. Blair’s future sister-in-law, Beatrice, arrives from Monaco, but her motives with Blair may be more than just to get acquainted.
After Robin assaults a girl who is out to ruin Barney's relationship, she is forced to begin court-mandated therapy sessions. Meanwhile, Ted gets too involved in Lily's pregnancy.
House is serving out a lengthy prison sentence for his various misdeeds, including his trip outside the country in an attempt to escape responsibility. Entirely cut off from his old life, House determines his current problems are the result of his inability to deal with people. Feeling he will never be able to practice medicine again, he plans instead to go back to university to earn a doctorate in physics - a field that will all but assure his isolation from other human beings.
When the park's bowling team, "The Park Strikers" make it to the championship match in a bowling tournament, Death, the lead member of the rival championship team threatens to reveal Skips' secret if he does not back out.
Maverick seeks justice for the death of two huskies and fears there could be a third. SPCA investigates the death of horse, and rescue a dog trapped under a house.
Hank pushes Gomez to pursue one last lead, while Walt struggles to protect the family. Jesse gets alarming news and rushes to meet with Mr. White.
When superintendent Chalmers is fired for taking Bart and his friends on an unauthorized field trip, the boys hold the school hostage until he is reinstated.
Gabrielle teaches Carlos how to dance on a strip pole; Susan seeks out a punishment for feeling guilty; Renee bonds with one of the customers at a senior center; Tom and Lynette wonder why Parker was at a late night party; Bree discovers Chuck's past.
After missing and presumed dead for eight years, Marine Sergeant Nicholas Brody is rescued in Iraq, and returns home to his family. But CIA agent Carrie Mathison suspects he might have been turned by his terrorist captors, and believes he could be part of a plan to attack America.
MI5 receives a red flash: radioactive material has been detected at an airport. They have intelligence that a highly dangerous anarchist with a penchant for dirty bombs has secretly entered the country. They enlist Dimitri to honeytrap the anarchist's only known contact, his sister Natalie. It is a morally tough operation for Dimitri, but through Natalie he gets close to the dirty-bomber. Dimitri's personal connection to them both proves invaluable in the tense and potentially lethal endgame.
Despite being publicly embarrassed by legal trouble, Nucky's biggest concern may be holding on to his private army in a battle for control of Atlantic City. Meanwhile, Jimmy pitches a business deal to Arnold Rothstein in New York, but may have more in common with Meyer Lansky and Lucky Luciano. Margaret draws on past experience to retrieve some valuable information, Chalky clashes with a fellow inmate, and an Irish nationalist comes to town looking for support.
While the Griffins are housebound during a hurricane, Brian ingests psychedelic mushrooms. He sees bizarre and unsettling things, and acts accordingly. Meanwhile, the rest of the family is bored and irritable, and Meg finally lashes out at Chris, Lois and Peter for all the crap they've given her. The crossover starts on The Cleveland Show S03E02 The Hurricane (I). It continues on American Dad! S08E02 Hurricane! (III).
Bo and Dyson team up to track down a stolen Mongolian Death Worm on behalf of Dyson's old wolf pack mate. When things get complicated, Dyson finds himself reliving his medieval days – tormented by the hard choices he once had to make, and fighting in the present not to repeat past mistakes.