Unity based construction safety animation (to be used with VR)

I am preparing a VR application for safety training. Unity will be used. This is the scenario:

Scenario Title: The Edge of OversightSetting:
A commercial building rooftop, 4 stories high. Concrete deck.Hazards present: Unprotected leading edges, uncovered floor penetrations (holes), and poor housekeeping.Phase 1: The Working Environment (The "Hook")Worker 1 (The Welder): Located near the center of the roof. He is crouched down, focused on a steel joint. The sound of welding sparks provides ambient noise.Worker 2 (The Supervisor): Standing near a stack of materials, looking at a clipboard. He is stationary but provides a sense of "order."Worker 3 (The Victim): He is carrying a large, heavy piece of plywood or a tool bucket. This limits his downward visibility.The Holes: Two $1\text{m} \times 1\text{m}$ floor openings are nearby, marked only by some loose scrap wood—no secured covers or guardrails.Phase 2: The Critical Error (The Incident)The Distraction: Worker 2 (Supervisor) calls out to Worker 3: "Hey, bring that over to the north edge!"The Path: Worker 3 starts walking toward the edge. To avoid a pile of debris on the floor, he shifts his path closer to the unprotected perimeter.The Slip: As he nears the edge, his foot catches on a loose piece of rebar or a slick patch of sawdust.The Momentum: Because he is carrying a heavy load, his center of gravity is off. He tries to regain balance, but there is no guardrail to grab onto. Total animation will not be longer than 60 seconds.

I need a good visual detail, scenario can be used to navigate in it with VR goggles and A need full file ın case to be modifed.