Calvin and Tina decide to take the honeymoon they never had to Madrid. Also, Dave and Gemma team up with Malcolm and Marty on a project intended to surprise Calvin upon his return.
When Tina insists Calvin find something to do in retirement, he decides to enter a competitive cornhole tournament; Marty plans an elaborate "groom-posal" to ask Malcolm to be his best man.
Calvin struggles to find the perfect birthday gift for Tina; Gemma works a connection to actor Jerry O'Connell, whose kids attend Walcott Academy, to secure VIP tickets to "The Talk" for her school's fundraiser.
Calvin and Marty encounter difficulties trying to secure financing for their new business; Dave invites his boss to Grover's 13th birthday party, much to Gemma's frustration.
With her usual stylist unavailable, Gemma decides to use Tina's hairdresser for an important work event; Malcolm discovers a connection with his new professor.
Calvin and Marty are surprised when their new business sparks protests from residents concerned about gentrification; Grover's family tree project reveals fresh details about the whereabouts of Dave's father, who left when he was a child.
When Dave's estranged father, Lamar, arrives in town eager to reconnect, his son finally learns the truth about his disappearance 30 years prior; Marty struggles to fire an underperforming employee.
Calvin pushes Marty to move up the opening of their new business to get a valuable celebrity endorsement; Dave continues to struggle with the return of his father; Tina and Gemma prepare for the opening of their new school play.