Following the devastating Second Great Kanto Earthquake of 2032, MegaTokyo underwent a reconstruction aided by revolutionary mechanical beings dubbed "Boomers." While they were originally designed to aid humans, the enigmatic corporation behind their creation - Genom - has endowed them with the power to emulate advanced human weaponry, rendering them a threat to humanity. To combat the escalating number of Boomer-related crimes, the AD Police has established a specialized team. However, due to the vast difference in technology between the two entities, they have struggled to keep up with investigations. The Knight Sabers, a clandestine group of vigilantes, is MegaTokyo's last resort. Donning highly advanced suits surpassing even military gear, the team - consisting of Sylia Stingray, Priscilla "Priss" Asagiri, Nene Romanova, and Linna Yamazaki - is devoted to eliminating any rogue Boomers endangering public peace.