MOVIE REVIEW

“Popstar: Never Stop Never Stopping”

Grade: C+

Starring Andy Samberg, Jorma Taccone and Akiva Schaffer. Directed by Jorma Taccone and Akiva Schaffer.

Rated R for some graphic nudity, language throughout, sexual content and drug use. Check listings for theaters. 1 hour, 26 minutes.

Bottom line: An on-point pop parody that loses steam partway through

The plotline of the music mockumentary “Popstar: Never Stop Never Stopping,” by the sketch comedy group The Lonely Island, is a journey that could be extrapolated onto the story of The Lonely Island themselves. Hired by “Saturday Night Live” for their hilarious music videos, Andy Samberg proved to be the breakout star, like his character Connor4Real in “Popstar,” while Jorma Taccone and Akiva Schaffer found success behind the camera as writers and directors (and sometime performers). One has to imagine if “Popstar” is their reckoning with group vs. individual stardom.

The trio share writing and producing duties, while Taccone and Schaffer take on directing the film in which Samberg, Taccone and Schaffer co-star as the Beastie Boys-esque rap group the Style Boyz. When Connor’s stardom takes off as a Justin Bieber-type bad boy pop star, the group fizzles, and “Never Stop Never Stopping” (a reference to Bieber’s own documentary “Never Say Never”) follows the peak of his success and ultimate downfall.

The first two-thirds of “Popstar” use documentary form to gleefully, and savagely, skewer celebrity in the age of non-stop social media, as well as the celebrity-crazed news cycle, where wardrobe malfunctions are breaking news, intimate moments are live-streamed and Big Gulp-swilling entertainment gossip journalists snark the pain away. One of the film’s best bits involves a corporate partnership with an appliance manufacturer to insert Connor’s new album “CONNquest” into every home appliance, and the invasion of privacy backfires spectacularly.

The best parts of “Popstar” lie in the strengths of The Lonely Island that we’ve loved on SNL — nonsensical and silly takes on pop tunes with sneaky smart and funny raunchy lyrical wordplay, coupled with surprisingly charismatic delivery. It’s a shame that the best, most shocking cut debuted on SNL last weekend, because it would have hit harder in the film.

The pop parody is on point through Connor’s downfall and dark night of the soul, but the last third feels like The Lonely Island team decided to stop writing and just wrap things up way too quickly and easily. The film stops being satirical, and the self-congratulation starts to feel real. It’s almost as if The Lonely Island starts to take the praise intended for the fictional Style Boyz.

To that end, the fawning from legendary African-American rappers and musicians like Nas and Questlove over the goofy rap group of three very white dudes drifts from the ironic to the uncritical, and it doesn’t sit right. Though two of the songs are direct references to white rappers Macklemore and Insane Clown Posse, the racial and cultural dynamics are studiously avoided. “Popstar” wants to be culturally insightful, but in refusing to interrogate itself, subverts its own message.