Sue makes a new friend while going through sorority rush, Axl tries to help Mike use social media to promote his business, and Frankie becomes emotional after Brick buys his own pants.
Axl hates his internship, and Frankie hates her job now that the new ownership has taken over. Sue is challenged to engage in critical thinking by a professor. Cindy asks Mike to tell Brick that she kissed another boy.
Mike and the boys plan a surprise 50th birthday for Frankie, Sue desperately searches for a sock lost in the laundry, and a school project forces Brick to try to get good at sports.
Sue discovers that she's too poor to keep up with her new roommate's spending habits, Axl discovers that befriending the boss isn't what it's cracked up to be, and Brick could lose his only two friends when he becomes a director.
While the Hecks take Brick to his first movie in a theater, Mike and Frankie fight over a conversation with friends, Sue runs into an old crush who has some surprising news, and Axl discovers that he shared an awkward moment with a friend.
After Axl and Hutch buy an RV to live in, things get complicated after Kenny moves back in. Meanwhile, Frankie tries teaching Sue how to flirt and Brick begs Mike to teach him to become a man.
Frankie prepares to take care of Axl and Sue when their wisdom teeth are removed, but nothing goes as planned. Brick's plan to assert control fails as well. Mike discovers that Rusty's ex-wife is coming to destroy their diaper business.
The Hecks decide to take a Spring Break vacation with the Donahues, but Frankie soon discovers that both families are going through their share of big problems.
Sue is embarrassed when she finds out that her history professor knows that she has a crush on him. Meanwhile, Brick begs his parents to give Cindy's parents a loan so they can pay rent and she won't have to move away.
Mike is upset that Axl is considering quitting football and losing his scholarship, Frankie does not like Sue's new activist boyfriend, and Brick struggles with the responsibilities of being an online product reviewer.
Frankie's plans to have a peaceful backyard lanai are ruined by her new neighbors' loud children. Axl and Hutch begin a new food business on campus. Sue and Lexie make plans for next year after they win the dorm lottery.
Instead of having a traditional Mother's Day, Frankie encourages her family to "pay it forward" to another family member. Meanwhile, Frankie's mom still has hurt feelings with Mike over a dance at a wedding 20 years ago.
Frankie and Mike stop worrying about Axl and Sue staying out late when they discover that they can spy on them with an app on their phones. Meanwhile, a geometry test will determine whether Brick or Cindy will be class valedictorian.
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.
Frankie and Mike are excited to meet Axl's girlfriend, only to discover she has a quirky personality trait. In the meantime, Sue wants to change her major to theater and Brick sets out to change his image on his first day of high school.
Sue's kicked out of college after forgetting to renew her financial aid, prompting Mike to visit the bursar. Frankie struggles to teach Brick how to swallow a pill. Hutch gets angry at Axl for taking the Winnebago without permission.
Frankie's surprised to hear the kids would rather live with Mike if they ever got a divorce. Sue attempts to reclaim her bedroom from Brick; Axl lashes out on his family after having to act nice around April.
Sue asks Axl for advice on how to break up with her boyfriend; Brick tries to fit in with his classmates; Frankie accidentally buys some racy underwear.
Iit's Brick's 15th birthday and time to learn to drive. Sue tries to choose a college major before the deadline and learns a shocking secret from Frankie along the way.
Rita Glossner takes Frankie on a road trip. In the meantime, Mike takes a fall at the quarry and Sue tries to get Axl to end his estrangement with the family.
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.