Now That Poppy & Branch Are Married, They've Formed A Strong Bond With The Trollings. But Keith, Can't Seem To Shake Out Of His Mischievous Ways. Feeling Like He's Nothing But Trouble, Keith Ventures Away From Troll Village. While Doing So, Keith Stumbles Upon Other Troublemakers Like Him And Into A World Where Mischief Is Everywhere. But When His Family Goes Out To Look For Him, Keith Must Figure Out What Kind Of Trolling He Wants To Be.