As Christmas approaches, Sue keeps a holiday secret from the family. After agreeing to watch the neighbor’s three kids, Brick finds himself trying to hide from them as they had such a good time that they keep wanting to come over and play. Mike doesn’t know how to react when Bill Norwood gives him a Christmas gift for the first time ever,

Axl is startled to run into nearly all of his former flames at a St. Patrick's Day party leaving him to wonder if it is a sign about his love life; Brick buys an old microfiche machine at a library sale, leaving Frankie and Mike less than thrilled.

Mike's friendship with Bill Norwood is in jeopardy after Bill gets angry when Mike poaches his plumber at a reduced rate; Frankie is disappointed when Sue refuses to tell.....

After nine hilarious and heartfelt seasons, a Heck leaves the nest as the family takes a road trip to Denver, where Axl will start his new job – and new life away from home.

The series concludes as the family escorts Axl to Colorado. Meanwhile the long affair of the snow globe and its relation to Sean and Sue's relationship comes to a head.

Frankie decides that April is not good enough to be with Axl and does anything she can to keep her out of the annual family Christmas photo. Frankie must fight for Axl's attention when he announces that he will be spending Thanksgiving with April.

After discovering that he doesn't have a decent suit to wear for upcoming business interviews, Frankie is thrilled when Axl agrees to let her take him shopping to help him pick out a suit; and when Mike threatens to do away with the family summer pool if Sue and Brick don't start using it, they begin to worry that he and Frankie may take even more things away from around the house from their childhood that they don't use anymore as they edge towards adulthood.

Frankie looks for the gift she bought for Axl's graduation; Sue decides to make a video for Mike's birthday; Brick asks Axl to help him get in shape after Cindy saves him from a bully.

Frankie, Mike and Brick begin to notice that their luck has changed dramatically for the better after the Prairie Scouts accidentally paint the Donahue's address on their curb; and after missing his final college test before he graduates, Axl pleads with his teacher to let him take it, otherwise he won't be able to graduate. Meanwhile, Sue confides to Brad that her sophomore year in college was kind of a letdown. But a chance to speak to students at her former high school about college life leads her to a realization about her status as a student while at Orson High. A talk with Brad leads into an impromptu musical number about Sue's many accomplishments over the years.

Sue prepares for her graduation and worries the day won't go perfectly. Meanwhile, Brick gets the opportunity to skip a year in school and Axl grows concerned about Devin's fun summer pictures she posted on social media.

Frankie is upset that Axl refuses to answer her calls or texts after she unintentionally admits her true feelings about his girlfriend April. Brick forms a tick in the form of a phrase that causes him trouble; Brad surprises Sue.

Axl begins to panic when he realizes that he only has four months of college left before he graduates, and he hasn't sent out any job resumes - something he should have started when he was a junior. Meanwhile, Brad agrees to lead Sue's no-cut a cappella group as they enter a music competition, and Brick desperately asks for Frankie and Mike's advice when girlfriend Cindy tells him that he reads too much, and if he doesn't stop, she'll break up with him.

Lexie joins the Hecks for their spring break plans where she confesses to Sue that she has a crush on Axl; Mike hires Coach Babbitt as a ringer to help the quarry softball team; Frankie tries to figure out the root of an underhanded comment.

Having finally graduated college, Axl tells Frankie and Mike that he's planning on going to Europe over the summer with Kenny. Although Frankie thinks this is a great once-in-a-lifetime opportunity, Mike is less than pleased and thinks his slacker son should be putting all of his summer efforts into finding a job. Meanwhile, Sue begins to panic after she barely scrapes a parked SUV and doesn't hear back from the owner after leaving several notes on the windshield, and Brick discovers that his sudden onset of backaches is due to not sitting in his lawn chair, which was replaced by a normal kitchen-table chair.

Axl feels embarrassed when he and Sue are asked to work on a school project together; Brick's school therapist (Dave Foley) tries to help him make friends.

A series of unfortunate events threaten to spoil the trip to Walt Disney World.

Each member of the Heck family finds themselves in situations reminiscent of "The Twilight Zone."

In the seventh-season finale, Frankie's determined to ensure Brick can sing at his middle-school graduation after his performance is cut; and Sue feels conflicted after learning she needs to be at Dollywood on the same day as Brick's ceremony. Meanwhile, Axl starts a new job as a country-club counselor and gets mocked by a 10-year-old version of himself.

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

Frankie and Mike are excited to be introduced to the love of Axl's life, April and the family is surprised when she reveals an unusual personality trait. Sue decides to change her major while Brick begins high school and wants to change his image.

Frankie remembers she has to come up with something to place in the time capsule; Bill Norwood informs Mike that he and Paula are separating; Brick tries to win Cindy back; Axl volunteers Sue to be his personal assistant.

Frankie makes it her mission to sway Axl from taking the job in Denver; Sue is depressed over Sean leaving for Ghana; Brick buys a huge amount of lawn chairs to replace the one he's been using for nine years.

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.

After years of being at their kids' beck-and-call and never having time for themselves, Frankie and Mike decide to take charge of their lives and regain control over the Heck household. But Axl, Sue and Brick don't plan on going down without a fight.