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.

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 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

Mike and Frankie must decide whether to attend Axl's football game or Sue's first cross-country meet; after raking the yard, Brick wants to set the leaves free in the forest.

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.

Brick pleads with Frankie to leave him home alone when she runs errands.

Frankie looks for a friend for Brick; Sue sneaks into an R-rated movie against Mike's wishes; and Axl and his band need a hot female for their music video and try to get stealth footage of their sexy biology teacher.

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.

As the Heck home begins to literally fall apart, Frankie and Mike consider leaving homeownership behind and moving the family to an apartment. Meanwhile, Axl tries to fake Frankie out by pretending that he's sick in order to get out of taking a school test - and must later convince her that he's well enough to attend a party that evening; Sue and her ex-sort-of-boyfriend, Brad, volunteer to prepare a school skit about showing the dangers of texting and drinking while driving; and Brick tries to offer a little bit of levity by spouting off Shakespearian quotes.

After being embarrassed over wearing a childish costume at a high school Halloween costume party and being ignored by the guys, Sue asks a flabbergasted Mike for his advice on what boys want when it comes to girls. Meanwhile, Frankie reluctantly volunteers to take Brick's socially awkward school social skills group trick-or-treating, and Axl and his friends devise a plan to trick rather than treat the neighborhood kids on Halloween.

Frankie and Mike decide to try a fresh approach to Valentine's Day by having dinner out with friends. But a clueless Mike angers Frankie by refusing to present her with a simple romantic gesture. Meanwhile, Axl can't think of a life-changing moment that's occurred in his life when he's assigned to write a school paper on the subject, Brick is tasked with writing a report on love, and a hapless Sue doesn't understand why her new boyfriend has suddenly turned into a bad kisser.

Frankie pulls out all of the stops in an effort to get an over-excited Sue tickets to a Justin Bieber concert, Mike is thrilled over Brick's enthusiasm to win the school's spelling bee and coaches him for the event, and Axl and his friends attempt to break a road sign's 15-mile-per-hour speed limit - on foot.

Misfortune plagues Brick after he finds a four-leaf clover; Frankie seeks a caregiver for her aunt; Axl struggles with a prom-date dilemma and is also dismayed to learn that Sue is Darrin's prom date.

The Hecks are pleased to learn that Mike's brother, Rusty is getting married. However, the joy is short-lived, when they discover that the wedding is to be held at their house. Meanwhile, Brick cannot attend a party that same day, due to the nuptials.

To help Brick's interactions with people, the school therapist urges Frankie and Mike to get him a small pet, but the ill-tempered bunny they give him teaches the family the true meaning of evil; Axl dates two cheerleaders.

Frankie and Mike worry that Axl may not get a sports scholarship; Sue's school science project involves smiling; Brick wants an iPad.

Axl and his friends, Darrin and Sean, offer to help guys break up with their girlfriends; Sue's ex-boyfriend, Matt, invites her to a Valentine's Day dance at school; Mike accidentally sends a romantic text to a co-worker instead of to Frankie.

Frankie is worried when Brick decides to go on a three-day school trip to Chicago; Sue wants to know if Darrin, one of Axl's friends, has feelings for her.

Disappointed with the finale of "The Bachelor," Frankie mopes for days; when Sue joins the school's tennis team, Mike tries to toughen her up by complimenting her opponents during matches; Cassidy and Axl consider the future of their relationship.

Frankie has a difficult time describing herself during a job interview; Sue dispenses unwanted advice to Axl and his band mates; Brick joins the Prairie Scouts.

Frankie tells the kids what she wants for Mother's day so one of them can clue in Mike; after repeatedly failing the driving test, Sue feels resentful when her friends get their licenses; Axl receives stunning news from Cassidy.

Tension builds as Frankie tries to plan a graduation party for uncooperative Axl; Sue tries to get her driver's license for a sixth time; Brick must assemble a slide show highlighting the past four years of school.

Mike tries to help after Frankie doesn't get a response to her texts to Axl, Sue gets an unexpected visit from Darrin, and Brick and his fellow classmates are afraid to use the school bathroom.

During the Orson Centennial parade, Mike and Frankie volunteer to drive a float, Sue tries to make Darrin jealous, Axl tries to make some money, and Brick is upset over his town slogan not being chosen.

Mike and Frankie agree to house-sit for Frankie's sister in hope of having a romantic, kid-free weekend; Axl, Darrin and Sean go on a road trip.

Frankie and Mike start to worry when Brick begins developing irrational fears. Sue is conflicted about Derrick Glossner's behavior. Axl and Sean shut down Darrin's attempt to start a Boss Co spinoff.

Frankie tries to persuade Mike to attend a dinner honoring his dedicated service at the quarry; Sue forms a plan to build connections between students; Axl hopes to track down a girl who left a message on his phone.

Frankie and Mike run into old acquaintances, Sue gets several dates to the prom, and Brick gets Axl's help for a book report.

Frankie begs Rita Glossner to take down her noisy wind chimes; Axl and Hutch try to figure out a way to retrieve a couch they found on the side of the road; Brick tries to come up with a new pretzel snack idea; Sue announces she is back with Darrin.

Frankie limits the hours during which the kids can voice their needs; Mike watches to make sure Darrin doesn't take advantage of Sue; Brick invites new friends over.

Sue enters a contest to win a car; Mike and his brother bond on a road trip to Chicago for Brick's spelling bee; Frankie goes to Axl's dorm to help him find a missing desk.

Sue's senior year, the "Summer of Sue," begins with the premature removal of her braces. Meanwhile, Axl finally beats Mike in basketball and Brick tries to find the perfect backpack for school.

Frankie and Mike are shocked when Brick announces that he wants to go to his school's fall dance. Axl has a week to declare his major but has no idea what it should be. Sue attempts to show she's more mature by drinking loads of coffee.

Frankie decides to buy a new kitchen table online, Sue and Darrin hit a rough patch over a piece of jewelry, and Axl and Hutch create a "fratority" to help pay for house bills.

Thanksgiving for the Hecks at a local restaurant buffet doesn't go well when Sue feels that Mike doesn't like her boyfriend, Darrin, and Brick invites his quirky girlfriend, Cindy.

Frankie loses her Christmas spirit, Mike unsuccessfully tries to exchange the new family Christmas tree, and a fight over Rudolph the Red Nosed Reindeer threatens to break up BossCo.

Valentine's Day aims its sights on the Heck kids when a nervous Brick finds out that his quirky girlfriend Cindy wants him to kiss her on the special day, Darrin asks Frankie and Mike to help out with an exciting scavenger hunt he's putting together for Sue, and Axl begins to question his girlfriend Devin's request that he not give her anything for what she considers to be a lame tradition.

The Heck family learns about Darrin’s marriage proposal to Sue…as well as her response. Meanwhile, Axl attempts to use his intro to Psych class to cure Brick of all of his quirks and tics.

Frankie accompanies Brick on a school field trip and attempts to help her socially inept son make friends with a couple of boys. Devin scolds Axl for being mean to his sister. Mike gets a sinking feeling that he may have bullied his brother Rusty a bit too much as kids.