When violent robbers loot a museum vault, fleeing with almost a billion dollars in treasure recovered from a sunken ship, Hondo and 20-Squad must chase down the thieving killers before they flee the country. Meanwhile, Tan reckons with the fallout from a SWAT Academy accident, and Gamble nervously awaits the verdict of her IA investigation.

The abduction and brutal torture of two college football stars puts SWAT on the trail of a violent drug dealer looking to extract vengeance for a drug deal gone bad, while Deacon's heroics bring unexpected attention.