The series takes place on Tenoo, which houses a temple for the training of Jedi younglings. Three particular younglings, adventerous Kai Brightstar, nature-loving Lys Solay, and super-strong Nubs, have been taken note of by Master Yoda. Throughout the series, they, along with their pilot friend Nash Durango and her droid sidekick RJ-83, help others, while also stopping Taborr Val Dorn and his pirate gang from causing chaos.
The series provides examples of:
- Alliterative Name: Kaliah Kublop and Zia Zaldor Zanna.
- Badass Adorable: All the younglings qualify, but especially Nubs, who looks like a teddy bear and has a personality to match, he also has super-strength.
- Big Bad Friend: Taborr Val Dorn turns out to be Prince Cyrus Vuundir, a character the younglings befriended in "Aftershock" - a story which otherwise had nothing to do with Taborr. "The Prince and the Pirate" is all about him trying to juggle Cyrus' friendship with the younglings with Taborr's life of crime without getting caught.
- Bruce Wayne Held Hostage: A villainous variation. In "The Prince and the Pirate," during an attempted robbery on Starlight Beacon Taborr gets caught in a room where Prince Cyrus, his civilian identity, was last seen. When the Younglings arrive and find Taborr instead of Cyrus, they assume Cyrus was taken hostage and Taborr ends up accidentally on the hook for kidnapping himself! He does almost decide to just come clean instead of going through the hassle, but in the end he instead manages to con the Jedi into letting him escape in exchange for Cyrus being "let go."
- Crossover: The episode "Creature Safari" features substantial roles from Aree and CAM. Aree would later get somewhat smaller roles throughout the series solo.
- Does This Remind You of Anything?: During the "Life Day" episode, the glowing Life Ball is accidentally dropped over the dwelling platform and rolls down and over the roofs and pillars of the other dwellings, bouncing like a pinball machine.
- Everyone Has Standards: The pirates of Yarrum Tower might be, well, pirates, but they have standards. They are disgusted by Taborr stealing jellyfruit from an elderly farmer and her grandson in "The Jellyfruit Pursuit", largely because it's a far from impressive feat.
- The Faceless: Taborr is constantly seen with a helmet that masks what he truly looks like. It isn't until the end of the first season that his identity is revealed.
- Flynning: A lot of it - it's how the show is able to still have lightsaber duels (or saber vs vibroblade duels in Taborr's case) while still maintaining a preschool-level of intensity. Even given that the the swords are set to stun, sabers will always clash with each other and nobody will ever be hit directly with one. At most the characters sometimes hit an opponent's weapon out of their hands, disarming them while not actually striking their person.
- Friend-or-Idol Decision: The episode "Yoda's Mission" has Kai learning that his lightsaber is replaceable, but his friends are not. He would end up losing his original lightsaber for good after sacrificing his chance to grab it by saving Nubs. Yoda would give him his own training lightsaber as a replacement, which would become his permanent one.
- Funny Background Event: The training droids can be seen carrying off Dee, the temple's custodian droid, in "Attack of the Training Droids".
- Glad I Thought of It: A running gag between Taborr and EB-3. EB-3 will suggest an idea, with Taborr automatically giving the same response, and ignoring EB-3's protests.
- Green Aesop: Many of Nubs and Lys' episodes, as they are into botany and wildlife conservation respectively. Raxlo's episodes are this as well, as he is a Ecocidal Antagonist until they apparently reform him in his last appearance.
- Goldfish Poop Gang: Taborr and his two goons are this. Other pirates don't take them seriously because Taborr's a kid, and get aggravated at them in "The Jellyfruit Pursuit" for stooping low enough to stealing from an elderly farmer and her grandson.
- Ironic Name: Raxlo's name is an anagram of "Lorax". Instead of being an environmentalist that protects trees, Raxlo's far more in-tune with the Once-ler of the book, harming trees for quick financial gain.
- Lighter and Softer: "An Adventure with Yoda" has two Nihil pirates as the villains of the episode. However, as Young Jedi Adventures is aimed at a younger demographic than even the most young-reader-friendly stories of the High Republic publishing initiative, the atrocities they commit here mostly amount to robbing a maintenance shop and stealing Jedi Vectors rather than performing lethal acts of piracy and terrorism as they are infamously known for. There is also a larger narrative justification in that since the show takes place before Phase I, the Nihil have yet to reveal to the galaxy just how organized and dangerous they really are, and their worst atrocities have yet to come. Even then, unlike many other antagonists in the show, the Nihil pirates are much more actively threatening and aren't given any comedic or sympathetic quirks.
- Mistreatment-Induced Betrayal: The titular character in the episode "The Junk Giant" was created by Taborr to wreak more havoc and steal more things. Once he accidentally breaks himself, Taborr considers him useless and throws him away, yet still demands for him to work for him. After realizing that he doesn't have to follow Taborr's orders, and that he's not useless, he instead fixes the damage that he caused and ends up working for Marlaa, who christens him JG-1.
- Nice Job Breaking It, Hero: Due to his impulsive nature, Kai is often susceptible to causing messes that he has to figure out how to fix. Lys often catches herself in the same issues, for the opposite reason of not paying attention due to being a creature lover.
- Noodle Incident: Master Zia regales Kai about how she had these with a pro thief named Ace Callisto.
- Our Founder: In "The Junk Giant", Taborr created the titular giant to steal the statue of Kaliah Kublop, founder of Kublop Springs.
- Pint-Sized Powerhouse: Nubs is a Pooba, a small, but very strong, species. He's shorter than the rest of the younglings, but strong enough to lift boulders and heavy machinery.
- Privileged Rival: Raena Zess is Nash's main rival in terms of racing. She appears to be in a far higher bracket of living compared to Nash, being able to afford a custom skiff with a pit droid crew, in contrast to Nash's homemade one.
- Set Swords to "Stun": Naturally, given its a preschool series. The younglings use training blades that don't cut anything, though they rarely strike anyone with their sabers anyway. Likewise, Taborr's wrist blaster shoots harmless concussive force that doesn't do much more than knock people down, and most droids' seen are security droids with tame lasers that hurt, but don't injure.
- Simultaneous Arcs: The Season 1 finale, "The Prince and the Pirate" ends with Starlight Beacon's dedication ceremony, an event which wrapped up the first wave of novels in the High Republic publishing initiative.
- Shout-Out: Raxlo's name is an anagram of "Lorax". However, he's far more Once-ler in motivation.
- Spoiler Opening: The intro shows Kai with a green Lightsaber, while his appearance in the first episode and its two segments show him with a blue one. The second segment of that episode, "Yoda's Mission", would have Kai sacrificing getting his original blue Lightsaber back to help save Nubs. The green replacement was gifted to him by Yoda afterwards, it being Yoda's original training Lightsaber.
- The Unintelligible: Nubs speaks in his own language which is incomprehensible to the viewers, with occasionally an English word thrown in. His two friends understand him just fine though. Raxlo doesn't.
- The Walls Are Closing In: The younglings get stuck in a classic Star Wars trash compactor in "The Prince and the Pirate." Though they actually make it out fairly easily, even given that one of them gets stuck inside.
