Two disasters frame this investigation: a November 2012 fire at the Tazreen Fashions factory in Bangladesh that killed at least 112 workers, and the garment supply chain that led there. Walmart's Faded Glory shorts turn up in the burned wreckage, and the company insists the order was subcontracted without its knowledge. Fault Lines pulls internal documents to test that claim, tracing how a Walmart order can end up filled by a factory the retailer never approved. Interviews with workers, factory owners, and supply-chain sources lay out what several people in the industry call an open secret: subcontracting lets big retailers keep prices low while losing track of, or declining to track, exactly where their clothes get made. The film asks a plain question and follows it through invoices and shipping records rather than statements from head office, building toward the same systemic failure that would surface again months later at Rana Plaza. It is a story about paperwork as much as fire, and about how much a brand can plausibly not know.