ROSSLYN STATION

After a successful undercover operation ensnared an MS-13 gang leader in a high-profile human trafficking investigation, the case is picked up by the feds, and Fairfax County Police Detective Sergeant Kiki Diaz prepares for a complex federal trial in Washington, D.C. The ordinary way to get from her townhouse in Fairfax to the courthouse downtown is via the Washington D.C. Metro, but this journey turns out to be anything but ordinary.By the third stop on the Metro's Orange Line, Diaz notices passengers filling up her train that don't exactly fit the profile of Washington's typical government commuters. These gangbangers are up early - and up to no good when all hell breaks loose at Rosslyn Station, last stop in the Commonwealth of Virginia.