When building inspector Eric Vance dies in a workplace accident eighty stories above Chicago—killed by a pigeon, a frayed cable, and forty dollars' worth of budget cuts—he doesn't get the afterlife. He gets a job assignment. He wakes up on Cumulus a floating island in the Driftlands that's basically a condemned job site. A leaning shack, a cracked dock, a dying Gravity Crystal with six hours of fuel, and not a single safety railing in sight. The System doesn't hand Eric a sword. It hands him a rare builder class—Sky Warden—built for structural analysis, settlement management, and turning ruins into something that won't kill its occupants. His signature ability, Constructor's Grip, manifests a spectral arm rated for five tons. It's not a weapon. It's a tool. Eric treats the difference as important. Starting from a sinking rock with a sentient gargoyle and a deficiency report, Eric rebuilds from the foundations stabilizing the crystal, repairing the dock, quarrying stone, constructing a beacon, engineering plumbing from first principles, and scraping together resources through trade and scavenging. Each project is a real engineering problem solved with real physics—load paths, thermal expansion, cantilever ratios—translated through a fantasy system that rewards competence with XP.