Convinced they'd be better off raising themselves, the Willoughby children hatch a sneaky plan to send their selfish parents on vacation. The siblings then embark on their own high-flying adventure to find the true meaning of family.
Scooby and the gang face their most challenging mystery ever: a plot to unleash the ghost dog Cerberus upon the world. As they race to stop this dogpocalypse, the gang discovers that Scooby has an epic destiny greater than anyone imagined.
Poppy and Branch discover that they are but one of six different Troll tribes scattered over six different lands devoted to six different kinds of music: Funk, Country, Techno, Classical, Pop and Rock. Their world is about to get a lot bigger and a whole lot louder. A 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, set out to visit all the other lands to unify the Trolls in harmony against Barb, who's looking to upstage them all.