In today's modern world, America discovered it needed a new kind of soldier. Not the kind of soldier who could jump out of an airplane, bench press 500 pounds and shoot a fly's head off with a sniper rifle from 1000 yards away. America now needed that dorky kid who sat in his bedroom every night eating potato chips, reading comic books and played medieval fantasy games online with his friends. This was to be America's new warriors. Nova goes behind the scenes of the fast-paced world of cryptography to meet the scientists battling to keep our data safe. They are experts in extreme physics, math, and a new field called "ultra-paranoid computing," all working to forge unbreakable codes and build ultra-fast computers.