Aubrey Plaza Is My Old Ass in a Time-Tripping Coming-of-Age Movie

My Old Ass wastes no time in getting to its central conceit, as memorable as its title if not necessarily as original: Elliott (Maisy Stella) celebrates her 18th birthday camping with her friends Ro (Kerrice Brooks) and Ruthie (Maddie Ziegler), does some mushrooms, and gets a campfire visit from… Elliott, herself, from 21 years in the future, played – in one of those casting decisions that imagines a fundamental face-change between young adulthood and not-quite-middle age – by Aubrey Plaza. It’s easy to forgive the leap, because Stella and Plaza share an informal fluency in youthful insouciance that traverses their zoomer-millennial divide, and because generally speaking, you want to watch Aubrey Plaza in movies. Even when she’s playing the mom-defending, grad-school-attending normie adult in the room (or the woods), there’s electricity in her eyes.
It’s a bold decision, then, possibly even a miscalculation, to have Old Elliott disappear for much of the movie. She doesn’t leave behind a lingering question over whether what Young Elliott experienced is real, because the older version makes a gambit that pays off with the casualness of a Charlie Kaufman screenplay: She simply programs her future cell number into her younger self’s phone and the two are subsequently somehow able to share conversations across the yawning chasm of time (and without any hallucinogenic aid). For much of the movie, all we get is Plaza’s voice. For some crucial stretches, and much to her younger self’s chagrin, we only get her voicemail.
The metatextual mystery that emerges is whether or not this is part of writer-director Megan Park’s grand design for My Old Ass, a necessity borne out of Plaza’s presumably limited availability, or some kind of triangulation of various creative and logistical factors. Regardless, Elliott meets Elliott before the audience knows many details of her younger life, which are filled in later, rather than building up to a big sci-fi twist. This leaves the movie structurally interesting, and also more than a little wobbly – a shame, given the inviting conceptual breeziness that Park uses to introduce her version of time travel. Though there are intimations of future-world decay on the older Elliott’s end of the line, she tries to offer advice in a more casual, less meddling way than, say, the sequel-teasing end of Back to the Future. She remembers that her younger self itches to escape her small Canadian town for her impending college education in a city, and therefore simply and gently implores her(self) to spend a little more time with her family, now and later; not at the expense of her goals (or as a dire warning about impending illness, which younger Elliott understandably guesses when older Elliott starts going on about how great their mom is), but with an attempt at understanding that no matter what the outcome, time will always slip away. That said, the older Elliott allows herself one piece of stricter and more specific advice: Don’t get involved with anyone named Chad.