Petra is a member of the Central Intelligence Agency of one very powerful country.

She was instructed to penetrate the underground structures of the subway in one of the countries of the world. And install a special beacon there.
On command from the satellite, this radio beacon is activated and serves to aim high-precision weapons. The brave girl dressed in the military uniform used in this country and penetrated the underground metro structures.

But she was arrested by guards and after brutal torture she was killed without trial ....