Happytown, the slum. Home of predators and immigrants of all diets. A scapegoat, an effigy for all the complex problems of a megalopolis. If an unscrupulous boor needs to whip up a frenzy and anger the city-state, Happytown did it. Change comes slow, a snail's pace like a rocket beside the incremental shift in attitude. In the misery and squalor, lives shine brighter for the good they try to do. One unremarkable day, one light was snuffed out. In the darkness it was hoped that would be swept away.
Enter Shalva "Sherlock" Gyag, an immigrant yak who feels Zootopia, but especially Happytown, is his home. His home has been attacked, and nothing short of death will stop the lama-turned-detective from seeing ultimate justice done. Not just for the first from, but for all crimes the first was meant to support. With the help of his understudy, a fiery French stoat and the reluctant assistance of a longsuffering ZPD liaison officer, his journey will go deep into the darkest place of all, the minds of depraved mammals. He will not listen to the oldest "truism" of Zootopia. "Let it go, it's Happytown."