I didn’t know my Phineas from my Ferb until about 20 minutes ago. No, I’m exagerating. I still can’t tell them apart. I vaguely knew they existed but had assumed the teal bird was either Phineas or perhaps Ferb. He’s not. Turns out he’s called Perry the Platypus, so apparently he’s not even a bird. As far as Phineas and Ferb (two human children, step-brothers) know, Perry is just the family pet, but he’s actually been placed in the family as a secret agent, which is old news if you’re a fan of the show – nearly every episode’s b-plot involves Perry trying to foil mad scientist Dr. Heinz Doofenschmirtz’s latest evil scheme. The main plot usually consists of Phineas and Ferb embarking on some grandiose project – like building a roller coaster in their backyard – which annoys the heck out of big sister Candace, and of which all evidence is improbably erased before she can alert their parents. This movie, it would seem, is when poor Candace finally gets her due, not to mention a starring role (although have no fear: Phineas, Ferb, and even Perry are all along for the ride).

If, like me, you’d never seen the show, worry not, because Candace basically sums up her fraught history with Phineas and Ferb in a cute opening musical number. Which brings me to the next point: Phineas and Ferb is somehow an animated musical comedy. That’s ambitious!

Anyway, poor Candace is usually portrayed as controlling and a tattletale, but I bet you’d feel kind of annoyed if you little brothers were always getting away with murder in the backyard. This is the film that finally reveals that she’s mostly been misunderstood. She’s not mean. She doesn’t hate them. She just feels excluded. So not only will Phineas and Ferb’s project today involve her, she’s actually its inspiration: Phineas and Ferb are going to rescue their sister from an alien abduction!

Yeah, I may have buried the lead. The stepbrothers witness her abduction and recruit Isabella, Baljeet and Buford to build a portal which fails to bring them to the planet where she’s been taken and instead redirects them to Dr. Heinz Doofenschmirtz’s lab, where he too was attempting to build a portal. So instead they board the evil doctor’s spaceship and head toward outer space, with Perry the Platypus secretly tagging along.

But Candace is not having the very bad day you might expect from the recent victim of an alien invasion. She’s bonding with her captor, who commiserates with her hardships (she also has 2 brothers, ugh), and who makes her feel special for carrying the rare element Remarkalonium.

Will the brothers find Candace before extraction takes place? And if they do – will she even want to leave? And will their parents finally catch them in the act?

The movie was surprisingly accessible to a first-time viewer, and was also surprisingly well-written. A stand-alone movie is planned for a theatrical release, but this movie, meant to have taken place before the series ended, was written specifically for Disney+ where it will find its fans the quickest. And that’s who this movie is really for, after all: the people who have loved and supported it since day one. The people, young and old alike, who miss seeing their favourite characters in new adventures. Fans of the show will be delighted with the film, which expands the Phineas and Ferb universe while working in all the things you loved about the original series.

Phineas and Ferb the Movie: Candace Against the Universe features the voice work of Vincent Martella, Ashley Tisdale, Dan Povenmire, David Errigo Jr., Alyson Stoner, Maulik Pancholy, Bobby Gaylor, Ali Wong, Dee Bradley Baker, Wayne Brady, Olivia Olson, Thomas Middleditch, Diedrich Bader, Caroline Rhea, Tiffany Haddish, John O’Hurley, Weird Al Yankovic, and more besides, but my fingers are cramping. It’s a good mix of new and old, which is what you want in a nostalgia-driven sequel. And what better way to indulge your youthful whim than to spend a Saturday morning in pajamas, with a heaping bowl full of sugary cereal, and your subscription to Disney+.