‘My Old Ass’ review: Aubrey Plaza’s time-travel comedy shines

Daydreaming about what you’d tell your younger self is a fool’s game. Sure, we’d like to imagine bestowing words of wisdom, mind-blowing messages of solace, or maybe even stock tips to our past selves. But if middle-aged you abruptly stumbled across teen you, what would you really say? That’s the promising inciting incident of My Old Ass, a time-travel comedy from Megan Park, the brilliant writer/director behind the sensational (and underseen) The Fallout. 

Starring Aubrey Plaza and Maisy Stella as older and younger versions of the same Canadian woman, My Old Ass reminds us that though we’re older, we may not be all that wiser. And anyway, there’s something to be said for the reckless naiveté of youth. 

Though among this year’s Sundance darlings, the coming-of-age comedy — from Margot Robbie’s LuckyChap Entertainment — doesn’t fall into maudlin navel-gazing or complicated artsy twists. Instead, it’s a briskly funny time-travel movie that bucks genre convention and allows its characters to be as charming as they are messy. 

My Old Ass rejects the cliched time-travel mission plot line. 

Time-travel movies mostly fall into three categories, all of them fixated on change for better or worse. There’s the Groundhog Day time-loop, where a hero repeats a cycle over and over until they get this one pivotal day right. There’s the Back to the Future model, where a fun-seeking dip in the past could irreparably change your future, even erasing you from existence. (See also: much of Doctor Who.) Then there are the many, many movies — be they Terminator or The Greatest Hits — that take the Quantum Leap approach: traveling back in time to set right what once went wrong! My Old Ass isn’t really any of these. And that’s wildly refreshing. 

This very different spin on time travel begins with the casting of Aubrey Plaza, who between Parks and Recreation, Scott Pilgrim vs. the World, and her chic yet surly interview persona, encapsulates a distinctive brand of elder millennial over-it. So the moment she shows up next to a bubbly, blonde Maisy Stella — 18-year-old Elliott, a small-town girl on the brink of booking it to the big city — you know this isn’t going to be your standard “save the future” adventure. Not that Plaza’s elder Elliott doesn’t try. 

While younger Elliott is out in the woods, celebrating her birthday with a shroom trip among friends, 39-year-old Elliott party crashes with some advice that is as admittedly cliched as it is true: Be nicer to your mom. Beyond this, “My Old Ass” (as she labels herself in teen Elliott’s cellphone contacts) refuses to speak much about the future, fearing this unplanned meeting could have massive consequences. She occasionally alludes to some major disasters to come, but her only warning is comically simple: Avoid Chad at all costs! 

Naturally, what follows is younger Elliott skinny-dipping into a meet-cute with a sweet boy named Chad (Wednesday‘s Percy Hynes White), with whom she shares an undeniable chemistry no matter how much she tries to ignore it.

Maisy Stella outshines Aubrey Plaza in My Old Ass. 

Maisy Stella dazzles in “My Old Ass.”
Credit: Amazon Studios

Where Plaza is here to be the cynical sage, Stella is radiant as the free-spirited goofball. Whether she’s partying with friends, hooking up with her hot girlfriend, or grousing at her family, Elliott’s charm is intoxicating — not because she’s exceptional, but because she’s not. Rather than setting her protagonist up as some noble savior of the future, Park allows Elliott to be a pretty average small-town girl desperate to move out and on to a life of her own. As such, Elliott is exuberant, horny, and reckless, colliding into awkward situations and unexpected vulnerabilities as if she’s driving a bumper car full speed down the winding road of this formative summer. Park captures the joy of carefree youth without romanticizing it, and she offers the same determined empathy for Elliott’s older half. 

With Plaza’s beleaguered eye rolls, Park swiftly dispels these fantasies that as we get older, we’ll have it all figured out. Instead, My Old Ass challenges juvenile notions that with age comes a coveted completeness, the sense that we’re not just settled but have life all figured out. The movie suggest such a hope is as absurd as our youthful ambitions to be a marine biologist and a professional dancer and President of the United States. So this story becomes less about a mission to change the past to impact the present, and more about coming to terms with our choices and who we were and are. 

While thematically, Park’s script is moving and spirited — just as The Fallout before it was — Plaza struggles to nail this balance. While she’s shown range in series like Legion and White Lotus, here she wobbles when playing anything but irritated. In scenes of bonding between the two, there’s an buzzing edge to Plaza’s tone even as she smiles at her character’s younger self. When the third act calls for softness, Plaza’s vulnerability feels performed instead of organic. Here’s where My Old Ass undercuts its sharp self-awareness and sincerity and slips into saccharine. 

My Old Ass rebuffs time-travel standards, like looking into the future to see how Elliott’s life changes. It treats the mission, and even the sci-fi premise, as little more than a launchpad for its heroine’s summer of reflection. If anything, the movie is more a teen coming-of-age comedy about that leap from high school to whatever comes next than a Quantum Leap at all.

Yet where those two subgenres collide is in a shared sentimentality over the past, and that veers into schmaltzy, for better or worse. Still, aside from this trip into treacle, My Old Ass is a spirited comedy about growing up and moving on that’s a true joy — just as Stella is a star on the rise to watch. 

My Old Ass opens in theaters Sept. 13.