Brick's teachers tell Frankie and Mike that he is "socially challenged". Mike believes that enrolling Brick on a basketball team is a good way to get him to interact with others, but the idea falls through. However, when Mike enters the neighborhood block-party lawnmower contest, he realizes that Brick has some special talents. Meanwhile, Frankie joins a booster club in the hopes of raising enough money for Axl's football team to buy new jerseys, but Axl refuses to give his old one up.
When Axl accidentally breaks down the front door, Mike insists that, he fix it in order to teach him a lesson, which leaves the Heck house wide open for days. At work, Frankie needs to sell a car within a week or she will have to wear a dog suit outside the lot for promotion. Meanwhile, it's picture day at school and Sue is concerned because she has never had a flattering picture taken of herself.
Frankie accidentally hits Brick in the head with a beer bottle when trying to get the trash out before the garbage truck leaves. But when Brick innocently tells his school that the scratch was caused by his mother throwing a beer bottle at him, a social worker comes to evaluate the Heck family. Meanwhile, Bob helps Mr. Ehlert shoot a commercial for the car lot.
Mike takes over the responsibility of organizing the Heck family Christmas while Frankie practices for a solo that she is singing at midnight mass. However, she gets jealous when Mike seems to be doing a better job than she ever did. Meanwhile, Frankie and Mike help Brick get over a problem so he can get into the Christmas spirit.
A hormonally charged Sue wants a cool pair of jeans in order to fit in with her peers, resulting in Frankie and Mike enduring the unpredictability of teenagers, while Axl wants a car to impress a girl. Meanwhile, attempting to teach Brick about responsibility, Frankie and Mike reluctantly allow him to take care of Aunt Edie and Aunt Ginny's dog Doris for a few days.
When Sue has a run-in with her sons, Frankie fears that a confrontation with the trasy neighbor may be at hand. Meanwhile, Axl attempts to bribe Brick after he's asked to teach his little brother how to kick a ball for a gym requirement. However, Brick is the one turning the tables and it ends up bribing him for another favor.
Mike loses his job when the plant shuts down for scientific research after he discovers a dinosaur bone in the quarry. However, Mike starts to get irregular feelings when he discovers how drastically things have change technologically over the years when considering the terms of searching for a job. Meanwhile, Frankie feels she must once again come to Brick's rescue when he decides to run for school historian.
Valentine's Day unexpectedly finds Frankie and Mike home alone and ready for a romantic evening while Brick is away at his first sleepover, Sue goes to her first boy-girl party, and Axl has a big date night planned with some friends. But Cupid's arrow doesn't exactly hit the target, and the best laid plans soon begin to unravel.
When Mike discovers that Brick is a spelling whiz and won the school spelling bee, he puts all his efforts into training him to win the regional bee, which could ultimately lead to competing in the Scripps Spelling Bee. But as the family gets set for their road trip to Chicago for the regional bee, Frankie and Mike are horrified when they realize they forgot one thing -- Sue's birthday.
Frankie fears for her job when a motivational consultant comes to get the sale team into shape. While Frankie is putting in many extra hours, Mike has to deal with the children and their issues, including making the house more fun for Axl and his friends, giving advice to Sue's ex-boyfriend and helping Brick with a school project.
Mike's dream comes to fruition when Frankie's boss, Mr. Ehlert, offers him two tickets to the Final Four. Unfortunately, Frankie's uncle dies and the funeral is set for the same day, leaving the two in a battle and Frankie making Mike chose what life event is more important to him. Meanwhile, Sue gets Brick out of going to a birthday party by impersonating Frankie over the phone, but the plan hits a bump when Frankie needs to call and tell them that Brick cannot attend because of the funeral.
After failing to pay the electric bill on time, the electric company shuts off the Heck's power. This leads Frankie and Mike to cut down on their unnecessary expenses, including their cable TV. The kids take up other activities to fill the void, but Frankie and Mike have a hard time figuring out what to do. Meanwhile, Brick and his other socially-challenged friends have to go outside for recess when the school library shuts down.
Frankie is worried that Axl's going to get his heart crushed again when his on-again/off-again girlfriend, Morgan, re-enters his life and tries to mold him into the man she wants him to be. Meanwhile Brick learns what it means to be a mother hen when he has to watch over a baby chick for a school science project.
Mother's Day for Frankie is anything but serene when she finds herself doing more for Mike and the kids and less for herself. But she learns that the apple doesn't fall far from the tree when she escapes the family for a few hours to go to her mom's (Marsha Mason, "The Goodbye Girl," "Chapter Two") and ends up acting like a child by making her mom wait on her hand-and-foot. Meanwhile, Sue feels guilty when she steals a motivational magnet from a store whose message actually enticed her to shoplift it.
Frankie points out to Mike that his social ineptness has been passed on to Brick, leading Mike to decide that both he and Brick need to be more social, and the Heck family BBQ is the perfect time to try. Meanwhile, Axl volunteers to clean the family pool in an attempt to get girls to stop by and swim and Sue tries to raise money for a local parish because her new friend, Reverend TimTom might be leaving in order to keep costs down
Parent-Teacher conferences cause Frankie to worry about the kids. In them she's told Axl is gifted but not applying himself, that her teachers still do not know who Sue is, and Brick may have to repeat the second-grade due to failure to return over 30 library books. Guest star Betty White as the school librarian.
While shopping for baby diapers for Sue, who has run out of them on a baby-sitting job, Frankie is completely humiliated when a clerk assumes she's shopping for adult diapers. Meanwhile, after getting on Mike's case to get a physical exam because she thinks men tend to fall apart faster than women as they age, Frankie proceeds to throw out her back and hides it from Mike, who tells her he received a clean bill of health from the doctor; a clueless Sue falls for Axl's friend, Sean, who barely notices her existence; and Brick begins to test all of the age-old urban legends parents tell their kids - such as not to swallow a watermelon seed for fear one will grow in their belly - after discovering Frankie has used these white lies on him in the past.
When Axl is suspended for skipping school, Mike decides it's time to teach his son a lesson about life and makes him go to work with him at the quarry. But Mike's master plan backfires when Axl likes the job so much that he wants to quit school and lead the life of a quarryman. Meanwhile, Frankie is devastated when she fears that she accidentally prayed away Sue's cross-country team after it's cut by the school; and while practicing a magic trick, Brick makes the main TV remote disappear - and can't figure out how to make it reappear.
Frankie is excited over being invited to an adult neighborhood Halloween party. But will she be able to get Mike to dress up in a costume, or will he have his own idea of fun? Meanwhile, a melancholy Sue's spirits are lifted when she discovers that Reverend TimTom is back in town and hosting a Halloween church event; things don't go quite as planned for Axl, his friends or their dates as they head out to an exclusive haunted house party; and Brick chooses a unique Halloween costume that is not easily defined.
Frankie and Mike are speechless when, on his ninth birthday, Brick demands to hear the true story about the day he was born, which has remained a mysterious Heck family secret. Meanwhile, Axl's new manager at the movie theater turns out to be a conundrum - hot and dumb - which leaves a confused Axl wondering if her hotness trumps her incompetence.
Mike begrudgingly invites his brother, Rusty, who is temporarily living in a tent, and his father, Big Mike, who has recently broken his hip, to join him for the annual Heck family Thanksgiving. But when Frankie observes the macho Heck men's non-communicative nature, she encourages a not-so-receptive Mike to engage them in a real conversation and express their feelings. Meanwhile, Brick is ecstatic when he discovers that Bob is bringing his girlfriend, Linda - the local librarian who loves books as much as Brick does - to Thanksgiving; and Sue wants to start a mother-daughter tradition of baking a pie for the holiday, but ends up getting more sliced up than the crust.
Mike freezes Frankie out because he can't fathom how she inadvertently paid $200 for a small bottle of eye cream that she thought was priced at $20. Meanwhile, Axl's fathering techniques are put to the test when he has to take care of a mechanical infant doll for health class, and Sue and Brick desperately search for a way to fix a hole that they caused in Sue's bedroom wall.
As the Super Bowl approaches, Mike is thrilled when Brick takes his advice and studies up on football in order to understand and talk the sport. But Axl thinks his little brother is taking over his turf by being Mike's football buddy - a position Axl used to cherish. Meanwhile, Frankie thinks her professional career is looking up when Mr. Ehlert chooses her to accompany him to a managerial seminar, and ex-boyfriend Brad asks Sue to be his dance partner for the school's annual Square Dancing with the Stars.
Frankie once again goes head to head with Brick's third grade teacher, Ms. Rinsky, when Brick gets a D on his math test and Frankie thinks poor teaching skills are to blame. But Frankie wonders whether or not she can make the grade when Ms. Rinsky requires that she and Mike attend a class to test their own math skills. Meanwhile, while begrudgingly watching over their crusty, old aunts, Axl and Sue mull over a plan to accompany Aunt Edie on a search for a time capsule she buried when she was young.
After learning that Axl text-invited the wrong girl to prom and plans to solve the situation by standing her up, Frankie and Mike demand that he meet the girl face-to-face in a timely manner to gently break off the date - or face the music and take her to the big event. Meanwhile, Sue and her friend, Carly, try in earnest to fit in with the school's "B" crowd during lunch, and after a successful first show, Brick begins to bore Frankie and Mike with his impromptu one-man plays.
Frankie and Mike attempt to cure Brick of his irrational fear of crossing over bridges. Meanwhile, Axl is pitted against nemesis Sean Donahue when a lifeguard position opens up at the local public pool, and Frankie is ready to pull her hair out when she tries to help an indecisive and emotional Sue pick out a two-piece bathing suit to wear on the pool's opening day.
With only three days left until summer vacation, Frankie is ecstatic that she's made it through another school year with the family. But her happiness turns to panic when she and Mike learn that Brick needs to write a daily journal and turn it in to Ms. Rinsky or risk not moving up to the fourth grade; that Axl hasn't fulfilled his required 30 days of community service; and that, because of an error, Sue must prove that she never took a sick day from school in order to receive a perfect attendance award at her middle school graduation ceremony.