The USCGC Bertholf, one of the Coast Guard's newest and largest cutters, patrols the Eastern Pacific hunting drug-smuggling vessels running cocaine north from South America. Cameras follow the crew through the ship's helicopter deck, combat information center, and pursuit boat launches as they track suspect vessels using radar, surveillance aircraft, and an onboard helicopter gunship. The film shows how smugglers have adapted with semi-submersible boats designed to slip under radar, and how the cutter's crew coordinates boarding teams to intercept and search vessels on the open ocean. Interviews with officers and crew explain the ship's systems and the tactics used on both sides of the chase, from long-range detection to high-speed pursuit in small boats. The film gives a procedural, on-board view of a single cutter's role in a much larger interdiction effort, tracking one vessel's routine patrol rather than the drug war as a whole.