2027 sees MegaTokyo eagerly anticipating the entrance of the Knight Sabers. Nevertheless, the newly created boomers (synthetic humans) are causing severe problems within society due to fatal occurrences, ultimately resulting in the Advanced Police being fully trained to handle such crimes. A new addition to the AD Police, Leon McNichol, must navigate the cruel world of MegaTokyo. Alongside his expert partner Gina Marceau, they confront the progressively unclear line between mankind and machinery.