Lt. Gracie Goodhart joins an Officer Exchange Programme and rivals Duke's standing as City's most beloved police officer.

Rooky and Grizzled go undercover aboard the Guardian of the Oceans in search of a lost pirate treasure.

Billy, Maddy, and friends resist Fendrich's iron rule and desperately try to prove that he does not, in fact, own the city.

"The Police vs Fire charity turns from good-natured to angry after competitive Tread Octane is brought in as a last minute replacement."

During the dedication ceremony of the city’s deep sea vessel to honor Duke, Freya and Harl, the ship is accidentally set adrift.

Grizzled and Rooky go undercover to root out the criminal mas-termind behind a counterfeit pie operation.

Maddy's filmmaking ambitions go wild when she offers to direct a fire safety video.

Tippy Dorman, faces the trial of the century after his attempt to take over the world.

Harl attempts to prevent Tippy from bringing the fabled "Mars Door" back to Earth.

When they learn Fendrich owns the city, the kids need Chief Wheeler's help, but he may have magically turned into a sheep.

Firefighter Buster Lloyd gets the opportunity to live out his fantasy of being a police officer.

An off-screen narrator, narrates a day in the life of helpful handyman, Harl Hubbs.

A nature documentary crew follow Billionaire Fendrich as if he was an animal in the wild.

Astronauts reach Mars orbit and prepare to launch their probes, but Tippy Doorman has other plans.

Moments before Fendrich can tear down city hall, Billy and Maddy learn the shocking truth of who owns the city.

Billy's mother, Ann, accepts a junkyard race challenge against the city's street racing legend, Tread Octane.

It’s a mad dash by Buster to retrieve his runaway mustache in this fast-paced, zany city-wide chase.

It's "Hands Off Day!" a city holiday, where the entire city doesn't use their hands for anything

It's Harl Hubbs Day and Harl decided to help the whole city, but quickly discovers he isn't prepared for Harl mania

It’s the day of the big rocket launch, and the entire city has Mars/launch fever!

Tired of the constant disrespect, Hacksaw Hank quits Fendrich's crew and goes to work for Mary Sinclair.

Fendrich and his gang learn of Cluster’s hidden junkyard treasure. Harl Cluster, Shirley and Tread unite to protect it.

Snake and Daisy take advantage of Tread to get him to act as their getaway driver to pull off a heist.

When Fendrich threatens to ruin Sinclair's Holiday Gala, Duke intervenes to save both the party and the holidays.

Freya takes Billy and Mark on a ride along, but when things get out of hand, it's up to Mark to save the day.

Detective Sam Grizzled is hired as a consultant on a movie about an action-packed bank robbery he foiled in his early police days.

When an exhausted Duke Detain makes an uncharacteristic mistake on duty, he volunteers to take his first-ever day off.

An unlikely friendship develops between Poppy Starr, the world's biggest pop star, and Harl Hubbs, the city's humble, helpful handyman.

With their best friends out of town, Maddy and Dread spend the day together and struggle to find common ground.

After buying a farm to grow his own produce, Mr. Produce becomes convinced neighbouring farmers are out to get him.

Fendrich and Sinclair forge an unlikely alliance to try and drive Harl off a piece of undeveloped land he owns.

Shirley Keeper infiltrates the city's underworld to retrieve the secret formula for Vita Rush's new flavour.

To build an environmentally-unfriendly factory, Fendrich preys on Mayor Fleck's need to be liked to approve his project.

Detective Grizzled's first partner of bad habits returns to the City, causing frustration for his current partner, Rooky.

The kids notice that Freya is in a rut when it comes to making firefighting decisions, so they help her get her groove back.

Duke DeTain and Shirley Keeper investigate the true identity of the Master Criminal.

It's Christmas Eve and Officer Duke DeTain is the only cop on patrol without a partner.

With help from the kids, Daisy "Kaboom" Lewis creates an alter ego to take the blame for her past mis-deeds, but two identities prove hard to maintain.

Duke gets a high tech, smart car. He and the temperamental car chase Ice Cream Truck Bandits

Mayor Fleck is running for re-election against R E Fendrich who will stop at nothing to win to use his new power to defeat Sinclair once and for all.