Jack-Jack Attack is a follow-up to The Incredibles. During the events of the movie (while Bob, Helen, Violet, and Dash are on Syndrome's island, to be precise), Kari the babysitter has her hands full with Jack-Jack, who's just discovering his numerous (and deadly) superpowers.
There is a recap of the short here.
Contains examples of:
- Action Survivor: Kari levels up into this. She's managed to survive all of Jack-Jack's random bursts of power.
- Baby See Baby Do: When Jack-Jack sees a picture of a fire, he turns himself into fire.
- Babysitting Episode: Jack-Jack Attack shows what was happening with Jack-Jack and his babysitter while the rest of the family was having the adventure shown in the film.
- Badly Battered Babysitter: Poor Kari has to babysit Jack-Jack as he begins to manifest superpowers.
- Blatant Lies: Syndrome claims that the gigantic 'S' on his suit stands for 'sitter' (and that he would have used the initials for 'baby sitter' if it didn't mean that he'd be walking around with a big 'BS' on his chest). Kari believes him anyway, because she's sleep-deprived and desperate to no longer be the target of Jack-Jack's newfound powers.
- Combo Platter Powers: Jack-Jack shows the following powers in this short alone (in order of appearance)
- Continuity Nod: This short shows the context behind Kari's phone calls.
- Crouching Moron, Hidden Badass: Kari's definitely ditzy and thinks that playing Mozart to babies makes them smarter (though she might have been right about that), but she can survive a whole day babysitting Jack-Jack, which is no mean feat.
- Eureka Moment: Jack-Jack seems to get one when Kari puts the Mozart CD on, seeing as he began using his powers immediately afterward. Interestingly enough, she did this because she believes that Mozart makes babies smarter. Perhaps The Cloud Cuckoolander Was Right.
- Getting Crap Past the Radar: Syndrome mentions how he was going to have the initials for 'baby sitter', but decided not to because it wouldn't do to have 'BS' on his chest.
- Goo Goo Godlike: See Combo Platter Powers.
- Have You Told Anyone Else?: Dicker to Kari at the end.
- Hero of Another Story: This is the other story for Kari, who was a minor character in the movie.
- Laser-Guided Amnesia: Kari gets hit with this at the very end.
- Logical Weakness: Kari exploits some to manage Jack-Jack. His fiery form can be dispelled by water or a fire extinguisher, and his eye lasers are deflected by a mirror.
- Lower-Deck Episode: For Kari.
- Meanwhile, Back at the... Parr house with Kari and Jack-Jack.
- Oh, Crap!: Kari's reaction when Jack-Jack bursts into flames after seeing the "campfire" flash card. Thankfully, she has the presence of mind to grab Jack-Jack with some heatproof tongs and extinguish him in the bathtub.
- Ominous Latin Chanting: The background music during Jack-Jack's rampage while on fire. Specifically, Wolfgang Amadeus Mozart's "Dies Irae". It's about the Apocalypse.
- Sanity Slippage: Kari is not too together on the second day, probably due to stress and sleep deprivation.
- Spiritual Adaptation: Has a similar concept to the Letitia Lerner, Superman's Babysitter.
- Sure, Let's Go with That: Syndrome is not eager to correct Kari's idea that he's her replacement.