The original “Trolls” movie in 2016 was about the unique privilege associated with being a Troll — kaleidoscopically colorful lives, unrelenting joy, hourly hug-a-thons. Chipper, loopy songs peppered the film, which presented pop music, and Pop Trolldom, as sources of joy that are unimpeachably good (if a little oblivious).

What horror lies beneath, though? In “Trolls World Tour,” which was released last week, Poppy, queen of the Pop Trolls, discovers that her tribe isn’t the only one out there, and that the Rock Trolls are intent on conquering them all, a residual effect of a time when Pop Trolls were, in fact, invaders. The real lesson of the movie? That one Troll’s privilege never comes without another Troll’s suffering.

And yet in a movie that features musical megastars including Justin Timberlake, George Clinton, Mary J. Blige, Kelly Clarkson, J Balvin, Ozzy Osbourne and Gustavo Dudamel, it is, somehow, the genial, sometimes grating funk-soul singer-rapper Anderson .Paak who’s tasked with the sociopolitical heavy lifting.