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.
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.
Axl and Sue wind up in the same life skills class, a school therapist tries to help Brick make friends, and Frankie and Mike fight the insurance company for a new windshield.
The Hecks arrive at Walt Disney World in Orlando, only to discover that their reservations and tickets are for Disneyland in California. And their vacation only goes downhill from there.
Axl runs into his ex-girlfriends at a St. Patrick's Day party, while Sean Donahue offers to take Sue to the Chancellor's Ball, unaware that she already has a date.
When Brick is not allowed to sing at his middle school graduation, Frankie takes up the fight. Sue may have to miss his graduation because of her job at Dollywood. Axl meets a younger version of himself during his summer job.
Sue wants to back out of her engagement to Darrin, but she doesn't know how to do it. Meanwhile, Axl uses what he has learned in his psychology class to try and "cure" Brick.
Sue keeps a holiday secret from the family. Meanwhile, Brick agrees to watch three kids, but later on regrets it. Also, Mike doesn't know how to react when Bill Norwood gives him a Christmas gift for the first time ever.