The story of Michael Gillespie, a brilliant (yet modest) programmer who has become one of the world's leading ransomware crackers. He works for free, sometimes alone and sometimes with others in the security world, to create decryptors that he releases via his site ID Ransomware, which has been awarded by the FBI for its services. The site allows users to upload encrypted files, scans them, and provides a decryptor if one exists. If it doesn't, it alerts Gillespie and his friends that there is a new strain to decode. He also lets the FBI know the IP addresses of those using the site, helping them better track ransomware outbreaks and cut them off at the source.