The gang faces warfare to deliver a letter to a house that never gets mail.

Patrick's anxiety rises when the cloud appears to the source of nightly thundering.

Angus accidentally throws Burt away.

Angus takes a day off, but Parker thinks it's permanent.

Angus agrees to compete against Mayor Peeve's new POSTBOT in a mail-off to save the Middlemost Post.

Parker's anxiety escalates when the cloud appears to be the source of loud nightly thundering plaguing the town.

After one of Lily's inventions goes haywire, she enlists Parker's help to get it back under control.

Angus loses his lucky beanie, which causes him to revert back to being a child.

Parker accidentally loses one of Russell's teeth and hurries to find a replacement before Angus finds out.

Parker's new friend turns out to be a leprechaun who is looking for gold.

When Parker finds mysterious love letters written by Angus, the little nimbus goes all over town to find who they're meant for.

On Halloween, the Middlemost Post crew tell each other scary stories to get through a blackout on the ship.

Mayor Peeve and the Middlemost Post compete with rival pumpkins in an annual pumpkin pageant.

Parker makes snow cones for everybody in town and learns that saying no isn't always a bad thing.

Parker and Angus make a delivery to a spooky old woman in the Middlemost Forest who might be a witch.

When Santa gets injured during a stop on Mt. Middlemost, Parker, Angus, and Russell help finish his deliveries.

Parker learns that the mail drone, which was thought to have been destroyed, returns for revenge.

Parker has a sleepover for the first time.

Parker and Angus go the distance to try and give Russell a bath before her stench becomes destructive.

Angus tries to woo the only dog that doesn't like him.

Parker becomes overly obsessed with a game.

Parker meets new people during a family holiday with Angus and Russell.

Angus and Parker take part in a toast competition organized by Miss Pam.

When a hot air balloonist crash lands into the Steadfast, the Middlemost Post goes on a journey to help her.

When Parker gives shelter to a spider during a blizzard on the mountain, the cloud learns of Angus' spider fear.

After a delivery round in Purpleton, the postmen find a stowaway: Baby Reggie. Parker feels desperate and wants to bring him home.

When a famous rapper comes to Middlemost, Parker gives him a new lease on life.

After winning the Middlemost Post's Cloud of the Month award, Parker begins to get into it.

Parker calls a plumber when the toilet is clogged, but it is Ryan who dresses up to solve the problem.

Parker tries to cheer up the grouchiest woman on Mt. Middlemost - Dolores Moody.

Parker, Angus, and Russell must save the S.S. Steadfast from being taken by pirates.

Parker must save Angus from rapidly aging inside Russell's belly.

Parker and Lily go on a quest through Old Stinkhole to rescue Angus.

Parker finds a body hair, and the cloud assumes it's time to become an adult!

During a trip to the dentist, Parker remembers how the S.S. Steadfast got shipwrecked on Mt. Middlemost.

Parker becomes obsessed with ranch dressing.

When a malevolent Smog Cloud terrorizes Mt. Middlemost, it's up to Parker to stop it.