Katie's least favorite holiday is Valentine's Day, but her desire for a low-key approach is overridden by Greg's over-the-top romantic gestures. Meanwhile Oliver has an expensive gift for the girl he's crushing on, and Taylor tries to put one over on her parents in order to attend a Valentine's Day party.
After failing to get donations on her own terms, Katie gives in to the dark side and teams up with Oliver to bribe rich Westport families to donate big-ticket items for the spring gala. Greg decides to take Taylor and Anna-Kat to a Revolutionary War reenactment, which Taylor finds lame until she starts a revolution of her own.
After feeling like their whole world and all of their conversations revolve around kids, Greg and Katie are ecstatic to meet new friends Zach and Courtney, a couple without children. Meanwhile, Anna-Kat coerces Taylor and Oliver into helping her with a storytelling project, which turns out to be a little more grisly than anticipated.
When Doris goes into labor and Katie heads to the hospital to be with her, the Ottos struggle to be in the same place at the same time in order to open their Christmas presents together, as is the Otto family tradition. Meanwhile, Taylor coaches Oliver on the best way to ask out a crush, starting with the gift shop clerk.
Katie and Greg dislike Taylor's new boyfriend, so they attempt to use reverse psychology to drive a wedge between them, which later backfires. After Spencer's over-the-top vision for Oliver's first date with a girl from his ballet class bombs, Greg helps Oliver make up for it with a romantic gesture.
The Otto children experience struggles in their love lives after jumping into the dating world: Oliver is forced to choose between his girlfriend and his friend Cooper, who come from two different worlds; Greg must play the "bad cop parent" to halt the PDA between Taylor and Trip; and Anna-Kat tries to make her relationship with Franklin official without his consent.
With her new job taking up more of her time, Katie and Greg try to split up parenting duties. Katie over-involves herself in Taylor's social life by trying to keep some distance between Taylor and her boyfriend, Trip, to make sure Taylor is her own person aside from him. Meanwhile, Greg tries to convince Oliver to be honest after overhearing Oliver lie to his friends about his less-than-luxurious summer vacation.
Anna-Kat runs for the Green Chair position in the school election against Chloe Brown Mueller's daughter, which results in Katie and Chloe turning their kids' election into a feud of their own. Meanwhile, Greg becomes concerned that Taylor's new friend Pierce is trying to steal her away from Trip, causing Greg to intervene and scheme to prevent it.
When Taylor decides she wants to go to a Halloween party, Greg and Katie disagree on whether or not Taylor can be trusted. Oliver and Cooper anxiously try to prepare for playing a game of "seven minutes in heaven" with their dates at a separate Halloween event. A pregnant Viv follows Katie around trying to get help preparing for her baby's arrival.
The previous "fattest housewife" in Westport gets plastic surgery to lose weight, and Chloe Brown Mueller rubs it in Katie's face that Katie has now assumed that title. In order to get revenge on Chloe, Katie goes through great lengths to dig up bad photos of Chloe from high school. In discussing body image with the kids, Katie and her mother, Kathryn, turn out to be bad influences on Anna-Kat and Taylor, unintentionally encouraging them to focus too much on the outward appearance.
Katie learns that the pin code the Ottos use for everything spells out Greg's ex-girlfriend's name, and retaliates by dragging out old gifts from past boyfriends. Meanwhile, the kids' current love lives take a hit as Taylor and Trip argue over her relationship with Pierce; and Oliver and Gina's relationship goes south when they both apply for a ballet scholarship that only one of them gets.
Katie lands the perfect pawn to play on the insecurities of the Westport housewives when she convinces a hot young trophy wife named Harper to volunteer as room mom for Anna-Kat's class, but she quickly shifts gears when Harper rejects Anna-Kat's idea for movie night. Meanwhile, Greg enlists the help of the kids to get Katie's mom, Kathryn, to take an interest in someone other than herself.
Oliver and Taylor stumble through their love lives, making Katie miss the spontaneity and unpredictability of being young and in love. Meanwhile, Kathryn's plan to soothe Oliver's heartbreak backfires when she tracks down an old boyfriend, Dan, and he is not as she remembers. At the same time, Anna-Kat makes strides at school when Franklin is stuck at home with the chickenpox, forcing her to make a new friend.
Katie strives to keep her long-separated parents apart when her father arrives in time to surprise the Otto family for Christmas. Anna-Kat does her best to help Trip win Taylor back but has a hard time getting past a very persistent Pierce. Meanwhile, Oliver thinks no one will remember him as the mask-wearing villain in the school's production of "The Nutcracker" but quickly takes center stage when a series of mishaps damages his costume.
Katie ignores Greg's warning and takes Anna-Kat through a terrifying zombie-themed maze at the annual Halloween carnival. Once inside, Katie quickly regrets her decision and sends Anna-Kat to find help. Meanwhile, Greg has entered a pumpkin carving contest and is ready to go head-to-head against the previous year's winners.
With Katie's 40th birthday fast approaching, her self-esteem starts to wane. So Greg encourages her to go out and enjoy a night on the town with the girls, even suggesting she leave her wedding ring behind for a night of faux-single, silly fun. Meanwhile, Angela receives devastating news that will turn Doris' life upside down. While Katie is away, Greg enlists the kids' help to create a birthday present that is a heartfelt reminder of how much she is loved.
Katie teams up with Oliver in hopes of growing her lasagna-making endeavor from hobby to serious business venture. Meanwhile, a bout of writer's block forces Greg to look at new career opportunities. When a young YouTube sensation enlists Greg's help to ghostwrite his memoir, Greg is pushed out of his comfort zone
After Anna-Kat’s big win with The Wildflower Girls, the Ottos head to California for an all-expenses paid family vacation. But when her birthday coincides with their trip, Katie is determined to have a relaxing kid-free day, one where she and Greg are free to do whatever they want. Meanwhile, Taylor loses all her money on Hollywood Boulevard and Anna-Kat is forced into busking to get them out of trouble; and after crashing their trip, Cooper surprises Katie by making her birthday wish come true.
Katie goes to great lengths to appease Principal Ablin in order to ensure Taylor graduates high school. Meanwhile, Greg finishes ghost writing the final chapter of Lonnie’s book. And while Oliver is devastated to learn Cooper’s family will be moving out of Westport, Anna-Kat tells Franklin she is ready to venture outside her comfort zone and plans to attend sleep-away camp during summer break.
Without her lasagna business to keep her preoccupied, Katie feels like her life is once again off course. As she searches to find her life purpose, she redirects her energy toward Greg and the kids becoming overbearing and controlling. Meanwhile, after sabotaging Greg’s efforts to preserve a historical landmark and putting the future of the Westport Historical Guild in jeopardy, Katie recommends Greg run for city council. And elsewhere, Franklin challenges an older boy to a duel in an effort to win back Anna-Kat’s affections.
Katie pushes Anna-Kat and Franklin to take a risk and try an activity outside their comfort zone in order to create new content for her mommy vlog. Meanwhile, Oliver is convinced taking performance-enhancing drugs will help him ace his SATs. And after bonding with her TA over an art exhibit, Taylor begins to wonder if Trip is the right guy for her.
Katie and Tami make fast friends with J.D., a luxury hotel manager whose promise of access to complimentary hotel rooms around the world sounds incredibly enticing. However, Katie’s travel fantasy comes to a screeching halt when she learns J.D. is an aspiring first-time father who’s counting on her for parenting guidance.
To celebrate the momentous 100th episode milestone of his podcast, Franklin invites Katie and the family to make guest appearances on his show, “Getting Frank with Franklin.” After witnessing his intrusive tactics with Taylor and the others, Katie is determined to keep her interview light and fun but is surprised when her mom Kathryn joins her. Meanwhile, Greg asks Lonnie to be his campaign manager to help strengthen his social media presence.