A subliminal flash-frame lifted from The Exorcist (Eileen Dietz in demon makeup) suggests that this tale of mismatched youths venturing into the Chilean desert to imbibe hallucinogenic cactus juice is headed somewhere hellish. It isn't – unless you count hanging out with quasi-mystical dopers as a Dantesque experience. Instead it pootles around in vaguely trippy fashion, relying on loose improvisation as the characters variously get on each other's nerves (and ours) before reaching a collective one-ness with the universe. Or something.
Knocked together while Sebastián Silva and Michael Cera were prepping the "heightened reality" thriller Magic Magic, this indulgent whimsy gropes towards some interesting ideas, notably the male fear and mistreatment of women (Gaby Hoffmann's damaged fruit loop is cruelly nicknamed "Crystal Hairy" by Cera's obnoxious bore), which teeters on the brink of insight. But like its characters, the film remains too woozy to focus on anything in particular, preferring instead to flail amid gently satirised Mayan-calendar mumbo-jumbo.
Apparently, it was uplifting and liberating to make; sadly, it's rather less rewarding to watch.