Marty and Courtney bring baby Daphne home from the hospital and Calvin is surprised to learn that Marty plans to take the paternity leave Dave offered in the employee handbook for the Fuse Box. Also, Tina will do anything to earn Daphne's love.

As Marty and Courtney struggle to get their newborn to sleep, the entire Butler family suffers along with them. While Calvin prefers to let the new parents figure it out, Tina insists on jumping in to help with Baby Daphne any way she can. When searching for their old baby swing, Dave finds an old list he made of cool things to do before age 40, which sends him spiraling as he realizes he hasn't accomplished any of them.

Dave gathers everyone for a lengthy ballot-palooza party to discuss the merits of every candidate and prop on each of their election ballots; Gemma is determined to run a tight ship as their local precinct captain when polls open at Walcott Academy.

The Butlers and Johnsons receive shocking news about their neighbor that changes their outlook on life.

Marty and Courtney prepare for Daphne's christening ; Malcolm is dating someone new and Tina is delighted to meet her.

Tina's newly single father visits. Meanwhile, Dave and Gemma try to curb their spending so they can afford to send Grover to a private high school.

Tina discovers her father has age-related impairments, making it crucial to reunite him with his wife.

Marty prepares to head back to work but isn't emotionally prepared to send Daphne to daycare; Gemma notices an issue with the grade Grover is receiving in his Spanish class.

The new neighbors who moved into Miss Kim's old house are keeping the Butlers and Johnsons up all night, but when Dave and Calvin attempt to get them to quiet down, they unexpectedly find themselves entangled in the game of pickleball. Meanwhile, Marty is stunned to learn that Courtney plans to go on a date and tries to find romantic interest of his own - but, much to his chagrin, he quickly realizes that Malcolm has much more luck than him.

The Johnsons and Butlers are curious about their new neighbors' lifestyle and their interest raises some surprising questions. Also, Marty feels pressure to enroll Daphne in the best preschool.

A new community social app shakes up the neighborhood; Marty and Courtney attend a family class with Daphne and unexpectedly bump into Marty's high school sweetheart.

Calvin and Dave join Lamar on a road trip to the casino. Also, Tina and Gemma babysit Daphne while Marty desperately tries to spend time with Courtney alone.

Calvin and Dave return from the casino, stunned by the revelation that Lamar had been laundering stolen money, which has now landed him in jail; Malcom runs into his frenemy.

Calvin spends a day babysitting Daphne. Also, Gemma and Dave worry about Grover's high school applications.

Malcolm receives an unexpected call from USC's athletic director about a baseball head coach vacancy. Meanwhile, Calvin and Marty start a new signature loyalty rewards program at The Fuse Box.

Calvin and Marty send Courtney on a mission to find out information about Fuse Box's impressive new rival. Meanwhile, Malcolm attends an event for his creative writing program at USC, where he scores a meeting with a book agent, Lisa.

Tina and Gemma plan a joint graduation party for Malcolm and Grover.

The Butlers and Johnsons help Malcolm start a new chapter in a new city that, while just across town, is worlds away from the neighborhood.