Photographer Patrick Brown spent a decade documenting the illegal wildlife trade across Asia for his book Trading to Extinction, and this film follows him as he finishes the project in Guangzhou, China. The camera moves through the markets and back rooms where endangered animals and their parts move as commodities, tracing the pipeline from illegal hunting and trapping to the buyers who want tiger bone, pangolin scale, or bear bile as medicine, status, or food. Brown talks through how he built access over ten years, what it took to photograph traders and smugglers without becoming part of the trade himself, and why Guangzhou functions as a hub where product from across the continent converges before reaching customers. His still photographs anchor the film, several shown in detail, alongside brief interviews about the conservationists and investigators trying to slow a market driven by demand that keeps rising even as species populations fall. The film stays close to Brown's own account of the work rather than building a wider investigation, but it delivers the specifics of one photographer's long look at a black market most people never see.