A fiery fight between Carole and Aviva impacts a party, shocking all attendees. Elsewhere, Ramona tries to accept that her daughter is growing up, and Kristen is pressured to participate in a demanding mud run.
Dave and Cara face some facts about their generation gap. Jen wants in on the cougar action, while Phillip has a big surprise for Julia.
Kira tries to force Abby into making her daughter an official member of the Abby Lee Dance Company; Cathy choreographs her dancers in hopes of beating Abby's girls.
A plan to work at his mother's deli to make money for a new pair of trainers is disrupted when Hank is given a school assignment to look after a pretend baby. He soon learns that he cannot juggle the two of them at once, but the real trouble begins when he accidentally swaps his fake infant for a real one.
Linda Smith is hoping for love when she meets wealthy and handsome Jim McDonald. But Jim's charm lasts only as long as he doesn't drink. Unable to stay sober, Jim becomes determined to keep Linda all to himself, even if it kills her.
Scott and Derek call upon their friends and allies to make a last stand.
Aaron chances the wrath of the Big Monkey when he overrides Richard's instructions on a Mustang Fastback. After picking up a "Holy Grail" Boss 429 Mustang in Minnesota, Richard questions Dennis's decision to buy a rustbucket Jaguar E-Class buried in snow.
Castle and Beckett investigate the murder of a Wall Street trader, but the case takes a shocking turn when the they discover the victim was an undercover informant for the U.S. Attorney’s office. To complicate matters further, the U.S. attorney involved is Elizabeth Weston, Captain Gates’ estranged sister.
After a cyber defense asset is stolen by a terrorist only known as Ivan, Red and Liz discover a cover-up; new evidence regarding Jolene's disappearance unravels some of the mystery surrounding Tom.
Liz Bonnin takes a look at how big data monitors Rolls Royce jet engines.
The queens impersonate celebrities in a quick-witted TV game show. With guest judges Gillian Jacobs (Community) and Heather McDonald (Chelsea Lately).
When Emery was 6 years old, an alien spacecraft crash-landed in her small town. Whether they came in peace or with more sinister intentions didn't matter: a fierce battle erupted as humans fought for control over their new rivals, an alien species called the Atrians. In the midst of the conflict, Roman, a 6-year-old Atrian boy, found his way to a shed behind Emery's house, where she temporarily protected him from harm, bringing him food, comfort - and friendship. Ten years later, the Atrians have been acclimated to life on Earth, but they are interned in a heavily-guarded camp known as the Sector to keep them separate from humans. Now, for the first time, a group of Atrian teens will enroll in a suburban human high school, with the goal of testing the feasibility of human/alien integration. Emery and Roman find each other again in a school and a society that distrusts everything about the Atrians. While the world around them rages with anger and prejudice, their bond becomes increasingly strong and increasingly dangerous.
Rick battles the devil and upsets Summer. Meanwhile, Jerry and Morty hang out.
Kathryn's book is leaked before it's published. Meanwhile, Bay is skeptical about Emmett's new girlfriend; Daphne has an unexpected encounter at the clinic with someone from her past; and Regina feels a sense of guilt about her behavior.
With only a half an hour left before the wedding, Robin and Barney panic; Lily and Marshall rewrite their wedding vows.
Celebration is in the air as St Patrick's Day dawns, but the Moones are having a different kind of party today: Fidelma's wedding.
Rae is furious when it looks like Chloe is going to let her down again, but a surprise discovery forces her to see things through Chloe's eyes for a change.
Chase loses the phone with a bowling video of him and Adam doing bionic bowling stunts at Tech Town while working. Leo and Bree try to get Principal Perry to spend her money when she retires after Donald gives her money and Trent becomes the principal and makes Leo's life miserable. It works in the end, but Principal Perry is broke and Scott fires Caitlin after she destroys an ePhone 7, the one that had Adam and Chase's bowling stunts on it, while giving them to the customers as revenge. Leo makes Trent wear a different uniform, but to Bree and Leo's shock, he loves it, much to their dismay.