Phoenix has become a major transshipment hub for the Sinaloa Cartel, and this episode of the Drugs, Inc. series tracks how cocaine, heroin, and methamphetamine move through the city on their way to buyers across the United States. Cameras follow street-level dealers, addicts, and smugglers describing the mechanics of the trade, from stash houses to the tunnels and vehicles used to cross the Arizona border undetected. Law enforcement officers, including DEA agents and local police, walk through seizures and stakeouts, explaining why the city's highway network and proximity to Mexico make it so useful to traffickers. The series' trademark mix of undercover-style footage, blurred-face interviews, and first-person narration from people inside the drug economy anchors the episode, contrasting the cartel's organized supply chain with the daily risk faced by users and low-level dealers on the ground. The episode treats Phoenix less as a backdrop than as infrastructure, a city whose ordinary roads and warehouses have been repurposed for a business that runs on secrecy and violence.