Mumblecore may be long gone as a moment in time, but the Duplass Brothers are still out there keeping its memory alive.  While mumblecore overachievers Greta Gerwig & Noah Baumbach made the highest-grossing film of the year—a feature-length toy commercial, no less—The Duplasses are still making low-key, low-profile indies, still putting together dependably entertaining pictures with limited resources.  Even so, their new sci-fi bromance Biosphere feels like a mumblecore throwback stunt in its limited scope, featuring only two actors on a single, sparse, Apple Store futurist set.  That scaled-down approach to movie production made more sense when they were making lockdown-era laptop dramas like Language Lessons, but at this point in on-set COVID safety protocols, it’s more of a flex than a necessity.  In cynical Gen-X 90s terms, the narrative would’ve been that Barbie was a sign that Gerwig & Baumbach “sold out” and that the Duplasses are somehow nobler artists for continuing to slack around on a condemned & abandoned mumblecore playground.  In these post-Poptimism times we’re living in now, though, there’s no such thing as selling out, and all that really matters is that Barbie is one of the best movies of the year, while Biosphere is just the latest example of what its producers have been consistently making for the past couple decades running.

That doesn’t necessarily mean they’re lacking in ambition, though.  Biosphere takes admirably big swings on its tiny playground, and it scores major bonus points for taking those swings early, so that it actually has to fully deal with the social discomforts of its premise instead of saving it all for a last-minute twist. Mark Duplass stars opposite Sterling K Brown as childhood best friends . . . and the only two human beings left alive after a nuclear apocalypse.  Every detail outside the bond of their friendship gets phonier & phonier the further the story spirals out from there.  Duplass unconvincingly stars as the Republican president of the United States and the main instigator of the nuclear shoot-out that ended it all, despite having more of an under-achieving court jester vibe.  Brown is slightly more believable as the politically progressive scientist who built the self-contained biodome they’re riding out the Apocalypse in, but the circumstances of when & why he built it get less credible by the minute.  That doesn’t matter nearly as much as the question of how two cisgender men are supposed to rebuild society without any outside collaborators for procreation, a question made even more uncomfortable by how their dorm-room college bro relationship is tested by their newfound need to be Everything to each other in a world the size of a living room.  Since the movie is most effective when it’s about the specifics of their evolving friendships, it’s probably for the best that there is no world outside their biohome.

I can’t say much more about Biosphere‘s premise without completely spoiling it, which I guess means that you should watch it with your best bro, so you have someone to talk it out with.  It’s thematically provocative in its discussions of the physiology & power dynamics of gender, poking specifically at the most sensitively guarded area of the topic: straight male companionship.  What does it say about the Duplasses’ filmmaking ambitions that Mark already starred in a movie about those exact bromantic sensitivities way back in 2009?  I’m not sure, but I do know that Humpday was received as a substantial entry in the mumblecore canon, while Biosphere feels untethered from anything especially urgent or substantial at all.  Even within the subgenre of movies contained in biospheres, it’s nowhere near as provocative as the eco-terror bomb-thrower Silent Running nor as memorably goofy & inane as the stoner bro comedy Biodome.  It’s just a Duplass Brothers movie that happens to have a sci-fi theme – the kind of low-key, oddly phony drama that makes you wonder why they didn’t just stage an off-Broadway play instead of making a movie.  I appreciate its ambition to challenge its audience in its thematic ideas, while I also question when The Duplasses are going to start challenging themselves with cinematic ones.

-Brandon Ledet