This episode of To Catch a Smuggler (which appears to be a compilation of other episodes) focuses on drug trafficking seizures performed by Homeland Security Investigations (HSI) and Customs and Border Protection (CBP), namely that of MDMA / ecstasy and methamphetamine. While giving insight into their careers and briefly explaining how drug trafficking works, they find 560 kilograms of liquid meth in paint buckets loaded into a truck and a large quantity of MDMA in parcels.