Nusiance in the Factory is an Odd Job in Chapter 3, "Home Sweet Slum", in Final Fantasy VII Remake, taking place in the Sector 7 Slums. While Tifa Lockhart gives Cloud Strife a tour of the Sector 7 Slums, the two speak to the scrap dealer, who has had issues with drakes in the abandoned Talagger factory.
Follow the quest marker to the scrap dealer, located in a metal tunnel on the northern end of the slums behind Seventh Heaven. The tunnel can be entered through the lefthand side of Seventh Heaven. Talk to the scrap dealer, who will tell the two to find Narjin, in the northern end of Pillar Plaza. Talk to him and he will let them through to the Abandoned Talagger Factory.
After patrolling the factory, several gorgers can be found. These are simple enemies defeated with Cloud's Braver or one of Tifa's martial technique combos, but one of them can stun the player, meaning the player must switch characters. The targets are lesser drakes, located by navigating the different warehouses around the factories. These are durable flying enemies, meaning Cloud and Tifa will jump to attack them when they use normal attacks. A good strategy is to use magic spells with Cloud, or simple attacks as Tifa in the air, to stagger or pressure them. Once on the ground, Cloud can use Braver, while Tifa can use Unbridled Strength twice to unleash Rise and Fall on them, defeating them once they are floored. After three are defeated, return to the scrap dealer. The quest "Just Flew In from the Graveyard" will be offered.
While in the factory, a Fire Materia can be found in the southwest end. To reach it, the player must follow the path around right first, and then take the linear path halfway along the top left, and open the door at the bottom end of the building to access it.
Hard mode tips
Because of the MP limitation, it is best to avoid casting spells and instead focus on using aerial attacks. Tifa can use Unbridled Strength to improve her attack damage, as most of her abilities will miss flying enemies. If either do use spells, they should equip weapons boosting his MP or MP regeneration, and if possible, equip MP Absorption Materia. This is because the following sidequest will be much more MP-demanding.