Jim Sterling asks Nate for help taking down a researcher who has designed a calibration weight for a nuclear reactor that will allow a terrorist nation to manufacture enriched uranium. The con occurs during an international chess tournament. However, it soon becomes clear that the Interpol agent has an ulterior motive, one which isolates Nate, gets Sophie arrested, and takes Eliot out of commission.

While Nate and the team try to uncover an embezzler by infiltrating an office, they get roped into participating in a documentary of the company they're trying to save.