[1] It is about John Stalker who is a research pilot for the fictional Central Guard Company.

The antagonist of the story, Adler, plans to attack the citizens of the Cancer Slums.

In this Japanese animated science fiction adventure, cities of the future are plagued by violence, and the Central Guard Company is commissioned to find a solution to urban crime.

One designer creates a Guard Suit with special psychic powers, while another develops a robotic killing machine that will not only eliminate the bad guys, but also get rid of his romantic rivals in the process.

But when John Stalker is given the assignment of testing the Guard Suit, it uncovers a dark and dangerous secret he has kept hidden from the world.