Lainey, Erica and Barry plan a big "Risky Business" inspired party at her home, just like the movie, while Lainey's dad is out of town. Later, when the party gets out of control, Beverly jumps to the rescue and Lainey is happy to have a mother figure like Beverly in her life, but for how long? Meanwhile, Adam's relationship with Dana by talking to her for hours on the phone angers Murray. As a result, Adam tries a bunch of new ways to contact her since she's moved away.
As Adam enters puberty, Beverly does everything in her power to help him through this awkward phase, including his crackling singing voice. So when Adam gets a lead role in the school musical, Beverly convinces Ms. Cinoman to have Adam lip sync - just like the musical group Milli Vanilli - while performing in "A Chorus Line". Meanwhile, Murray inspires Erica to go to the Homecoming Dance with JTP member Geoff Schwartz.
Murray's attempt at bonding with Adam goes awry when the two end up fighting over the robot they are building; and Barry makes a huge mistake when he accidentally tapes over Beverly's beloved video of his 5th birthday party.
Adam, who's embarrassed by his changing body, is desperate to get out of swimming in gym class; and Erica tries to create her identity at school by starting a club that, to her dismay, Barry joins.
Upset by Barry's insecurity in their relationship, Lainey sets out to teach him a lesson with Erica's help. However, the situation turns into something totally different and Barry goes to school dressed like Boy George hoping it will change. Meanwhile, Beverly doesn't approve Murray's new mustache so she shaves it off but it backfires.
When Dana comes to visit Adam for Halloween, he wants to spend the night with her and not Beverly. Trying to cope with this turn of events, Beverly decides to teach Adam a lesson on how dangerous the holiday can be, but the tables turn on Beverly. Later, Barry and Erica convince Adam to take Dana to a haunted house. Adam refuses to go back inside when Dana loses her promise ring and an unlikely family member helps him.
Barry's dream of having a dog comes true, but he's disappointed when the pup takes an immediate liking to Murray; at the same time, Beverly is upset not to be included when Erica and Lainey plan a girls-only sleepover.
Beverly insists on hosting a big family gathering for Thanksgiving, but tension builds when brother-in-law Marvin tricks Pop-Pop into thinking the Turkey Day celebration is elsewhere. Meanwhile, Barry and Erica turn the traditional holiday toast into a game of one-upmanship.
Inspired by "Top Gun", Barry decides to join ROTC. Convinced it will help discipline him, Murray orders the Captain to prevent Barry from quitting when the going gets tough, prompting Beverly to join Barry, too! Meanwhile, Adam helps Pops get his swag back with a special librarian.
Disappointed with her unenthusiastic family during the holidays, Beverly creates "Super Hanukkah" to get them into the spirit, but it's too similar to Christmas. Meanwhile, Adam is annoyed that Barry is more interested in hanging with Lainey than him, so he triple-dog dares his brother with results neither one see coming.
Murray doesn't budge when Beverly wants to remodel their kitchen like the Kremps. Beverly devises a plan to do the work herself, but messes up on purpose, so Murray is forced to fix it; but it doesn't go exactly as planned.
Beverly decides to volunteer for Hands Across America in an attempt to get closer with Barry and Erica. She gets them to spoil her with affection after she promises an appearance from Scott Baio, but the plan fails. Meanwhile, Adam gets himself into a sticky situation when he promises to take his best friend and his girlfriend, Dana, to the school dance.
Adam and Emmy are excited when their favorite TV game show "Double Dare" holds auditions at their school. Their friendship is tested, however, when they secretly ask Pops and Handsome Ben to be their respective partners. Meanwhile, a superstitious Barry comes to believe that Beverly is the key to ending the Philadelphia Eagles' losing streak.
Murray attempts to encourage Adam to break the rules which results in Beverly taking away Adam's phone privileges on Valentine's Day. Barry does everything that he can to try and impress Lainey.
Dana comes to town, but has a hard time mustering up any enthusiasm for a "Weird Al" Yankovic concert Adam wants her to attend, which makes him think their relationship is coming to an end. Meanwhile, Erica and Barry take their new found knowledge as peer counselors and apply it to Murray, who they diagnose as depressed.
When Barry sees underdog Eddie the Eagle in the Olympics, he decides to popularize Ball Ball in order to gain respect at school. Meanwhile, Beverly catches wind that Murray's store sales are down and intervenes by selling the latest furniture craze... .
Beverly helps Erica plan a "Dirty Dancing" themed dance at school, only to turn on Erica when she realizes it may be inappropriate. Meanwhile, Murray tries to learn dancing with Adam with little luck.
Adam schemes to get as many cassette tapes as possible from a mail-order music club, but when Beverly gets wind of this scam she points the blame at Erica. Meanwhile, Barry is determined to get closer to Lainey's dad, Bill, even though it's an uphill battle.
Inspired by David Copperfield's walk through The Great Wall of China, Adam becomes a magician in order to impress a girl at school. Meanwhile, Barry has no interest in taking the PSAT, but when he discovers his friends and girlfriend plan to do so, he's hit with a harsh reality.
It's the nerds vs. the jocks, with Adam as the latter's leader, playing Dungeons and Dragons. Meanwhile, Erica makes a decision about the college she wants to attend, but neither Beverly nor Murray are on board.
Barry accuses Beverly of liking Adam best; and Murray immediately takes a disliking to Erica's new beau, while Erica develops a fondness for the band Rush.
Beverly is upset on Mother's Day when she receives an obviously last-minute gift of "mom coupons".
Barry's favorite shirt is hated by Beverly and Lainey, so they hatch a plan together to destroy it. Once his shirt goes missing, Barry asks Adam and Erica to investigate. Meanwhile, Murray decides to tear down the family tree house, leaving Adam distraught.
Adam and his soon-to-be freshman pals live in fear of the hazing they expect to get from the senior class, but then Adam body slams his way to earning their respect in the Season 3 finale. In other happenings, Erica and her friends decide what to put in a time capsule.