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.
When Santa shows up for summer vacation, Angus is conveniently injured and needs Santa to deliver the mail. Parker wants to help Lily's sisters plan her Wing Ding, but it's clear the little nimbus doesn't quite fit in.
Parker makes the Yellow Springs soccer team, which thrills Angus since he never had the chance to play growing up. Parker brings home a hamster the Middlemost Post falls in love with, but this love quickly turns to jealousy.
Parker tends to a small strawberry garden until its survival is threatened by a horde of ravenous birds. Parker discovers Angus can't swim, but with the little nimbus' help, the sailor's on his way to becoming a buoy.
Parker meets Mt. Middlemost's resident daredevil, who hung up his cape after an extreme jump went wrong. Ms. Pam creates a sentient jar of jam who wins the hearts and minds of all who dine at the Middlemost Toast.
When multiple packages are found smushed, the Middlemost Post must discover the truth and clear their name. Parker wakes up one morning with Tie-Dye Eye, and pretty soon, so does the entire mountain.
After Jelly goes missing, Parker and Lily volunteer to help Ms. Pam find her. After accidentally swallowing an irreplaceable Shackleton family stamp, Parker goes inside Angus to retrieve it.
Parker makes snowcones 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.
Parker accidentally loses one of Russell's teeth and hurries to find a replacement before Angus finds out. On Free Toast Day at the Middlemost Toast, Parker does whatever it takes to make sure Angus enjoys the holiday.