The movie is a sequel to the 2016 movie Trolls.
After the events of the first movie, Poppy and Branch discover that they are but one of six different Troll tribes scattered over six different lands, each devoted to a different form of music: Pop, Funk, Classical, Techno, Country and Rock. Their world is about to get a lot bigger, and a whole lot louder, as member of hard-rock royalty, Queen Barb, aided by her father King Thrash, wants to destroy all other kinds of music to let rock reign supreme. With the fate of the world at stake, Poppy and Branch, along with their friends — Biggie, Chenille, Satin, Cooper, DJ Suki, Guy Diamond and Tiny Diamond — set out to visit all the other lands to unify the Trolls in harmony against Barb, who's looking to upstage them all. Meanwhile, Branch tries to find a way to tell Poppy how he feels about her.