The series takes place before Russia's full-scale invasion of Ukraine.

The main character, Sensei, is the head of a new SBU special unit called Sturm, a rapid response investigative team that combats crimes against Ukraine's national security. The unique group is made up of young fighters, generalists who also have combat experience on the front line: hand-to-hand combat and covert infiltration specialist Max, versatile soldier and sniper Donatas, explosives specialist Ivanka, forensic expert and paramedic Halyna, cybersecurity technician Dum. Together, the heroes will expose the complex operations of dangerous terrorists and even global criminals.