In the pressure cooker of war in Ukraine, drone warfare is developing at breakneck speed. How close are we to the ultimate killer drone, an autonomous weapon that selects and destroys a target without human intervention? An investigation into how this technology is changing the battlefield forever. What does it mean when machines are given a decisive role in matters of life and death? Can we limit this technology to the battlefield, or will it seep into the wider society? And does it really matter whether you are killed by a human or a machine?