When Malcolm's friend, Trey is treated with racism by police officers, both the Butler and Johnson families unite against it.
With the City Council's election day approaching, Dave finds himself blindsided when he has only 6 hours to prepare for a debate.
Tina tries to convince Calvin to go to a marriage counselor after learning that Dave and Gemma's marriage is kept strong by seeing one.
When a new neighbor, Wyatt comes with his pet rooster that wakes up the neighborhood all night, Calvin and Dave tend to do something about it. Elsewhere, Tina discovers Marty's hidden secret.
When Dave convinces Calvin to go with him on a road trip to Nevada in his classic hot car, Tina starts complaining that the latter traveled neglecting many planned home projects.
Dave and Gemma fear the worst when Gemma's sister, Brittany returns to town, but she claims that she has changed when she returns all the money she took. Meanwhile, Dave convinces Calvin to spend some of Brittany's check on an escape room.
As Dave and Gemma's plans to revive their marriage while going to Vegas don't go as predicted, Calvin and Tina are surprised when Malcolm comes home with a motorcycle instead of a car.
Calvin and Dave try to persuade Walter that they can get him a better price after fixing his house, as they are worried when Calvin learns that the latter is trying to sell his property to a rich developer.
Dave and Calvin's plan to retrieve Gemma's lost phone goes wrong.
When Calvin finally agrees to get a physical exam, he finds himself getting more than expected. Meanwhile, Marty is irritated when Grover asks Malcolm to be his guest for career day.
When the lead singer of Dave's band suffers from a sore throat before a performance, Tina offers to help, but things do not go as planned.
Marty is asked to supervise Calvin while building a tree house for Grover. Meanwhile, Malcolm unintentionally causes a baking contest between Gemma and Tina.
Calvin is taken aback when he learns what Tina and Gemma's first art class assignment is about. Elsewhere, Dave, Malcolm, and Marty are disappointed when they know the ending of Walter's murder mystery novel.
When Dave stops a robbery happening in the barbershop and is called a hero, Calvin keeps warning him. Meanwhile, Gemma loses her wedding ring and ruins Marty's garden looking for it, when she is there trying to calm down after the robbery incident.
Calvin goes into a challenge with the rival auto shop owner, Victor Alvarez, and wins with the unusual help of Dave.
Dave enlists Marty's engineering skills to remind Gemma how difficult a newborn baby is when she says she wants another baby. Elsewhere, Tina and Calvin have to decide what to do with the money found in a bible.
When Calvin's school enemies open their manicure business next to his shop, Dave suggests he makes peace with them. But in return, they play a prank on him. Gemma and Tina plot a way to keep track of Tina's sons' dating lives.
Calvin receives an unexpected surprise on his birthday from his mother, an urn with his father's ashes. He and Dave decide to honor his father by going fishing. Meanwhile, Tina and Gemma prepare a surprise party for Calvin, but Gemma has her own big surprise for him.