Harmony pushes Flute to move out, resulting in him moving into a house haunted by a doting housewife. Things soon go awry when Flute invites everyone for an adult party at his house, and Flute's disregard of the ghost prompts her to threaten their lives.

When Flute forgets to buy Stan a gift for his birthday, he steals an A.I. Doll from the evidence locker named MO11Y, unaware that the doll is actually a murderer. When an investigation leads the precinct to Grimsburg's "Dolltown," Wynona is forced to confront her ex-boyfriend, Buddy, while Summers struggles to find the right moment to finally ask her out.

After nepo baby Otis the Kid Detective is put on the force per pressure from the Mayor, Flute makes it his mission to get the kid to quit the force. But his plans to scare Otis away go too far, just as Flute grows a soft spot for him.

When his dad returns to town, Flute will do anything he can to keep his idol around, even if that means getting rid of his sibling rivalry – his dad’s talking car. That’s right. Flute’s Dad is basically Michael Knight and his “step-brother” is KITT. With Flute spending time with his father, it's up to the detectives to teach Stan about the birds and the bees.

It’s time for CrimeCon–Grimsburg's famed crime-themed convention. When Flute learns that the criminals at CrimeCon are celebrated, not the detectives, he makes it his mission to prove that celebrity criminal, Damien Flesher, is not the reformed cannibal he claims to be. While chaperoning his students at ConCon and questioning where he is in his life, Pentos meets the Pentos-tonix, a Pentos-themed acapella group. Pentos then has to prove to them that he has still "got it" and is the criminal mastermind they grew up idolizing.

When Flute goes for surgery to have a second testicle put in, he finds an unexpected side effect is being able to see the future anytime he is hit in the balls. But the joy of being psychic all comes crashing down when he sees a vision of himself proposing to Martinez and he must stop this future before it becomes his reality. Summers and Pentos find themselves arguing over who is Flute’s best friend. Disappointed that Flute doesn’t share their sentiments, they turn to one another to help live their best lives and end up competing together on "The Grimazing Race,” Grimsburg’s version of the popular reality competition show.

Roles get reversed in Flute and Summers' partnership after male sex workers start turning up dead.

In order to win this year's Undies Award for best undercover operation, Flute infiltrates the Preggo crime family.

Flute and Martinez butt heads as they're sent on a literal "wild goose chase" by the mayor to retrieve a sentient goose that was given a Limitless pill and is now on a crime spree in Grimsburg. Harmony chaperones Stan's field trip to visit the Mayor, but instead of nurturing his passion for civic duty, she succumbs to social pressure and befriends the bullies in Stan's grade.

Memories are sparked when Grimsburg PD cleans an evidence locker.

When the criminals of Grimsburg go on strike, the police force gets furloughed.

An interdimensional rift appears in Grimsburg and through it emerges the Multi-Flutes, an elite squad of Flutes from different dimensions.