The main character of the film is John Schaft III, a little-known cybersecurity specialist at the FBI who tries to solve crimes with the help of logic, his intellect and nanotechnologies. But sometimes, in order to solve a crime, you need to resort to violence. Someone killed John's best friend, and now he seeks help from his relatives. His father is ready to help his boy understand this case, but even together they will not be able to cope with this puzzle, therefore, two generations turn for help to the third generation, John's grandfather. He used to solve all issues with his fists, but sometimes it’s better to have a gun with you, because the world has changed in all this time. From this moment, the Shaft family begins an investigation of the most confusing and mysterious murder.