Los Angeles—behind the sun-drenched facade of the "City of Angels," multiple boundaries carve through blood-stained concrete. These are the borders between city and county, the gaps in the legal mesh, and the territory lines where survival on the streets is at stake. From the high-tech skyscrapers of Downtown to the soot-covered asphalt of South LA, the metropolitan area is being eroded by massive street gangs linked to international Mexican cartels. They skillfully exploit the jurisdictional walls between the Los Angeles Police Department (LAPD) and the Los Angeles County Sheriff's Department (LASD), expanding their networks of drugs and illegal firearms as if mocking the pursuit of the law. "We can't pursue because it's out of our jurisdiction"—the era where that excuse was permitted is over. To eradicate the notorious underworld supply chain, elites were summoned from the LAPD's Gang and Narcotics Division (GND) and the LASD's Operation Safe Streets Bureau (OSS). Their name: J-CAT (Joint County-City Anti-Gang Task Force). Crossing the organizational walls of agencies often ridiculed as being at each other's throats, this joint task force was formed to reclaim the safety of Los Angeles. In a room at headquarters, a massive monitoring display and a whiteboard are covered in a web of case correlations. The air is thick with the tension of those who confront the threats of the underworld day and night. Taking command is Lieutenant Rachel Eisner, the field supervisor for LAPD GND. Under her, as she oversees the whole with cold rationality and sharp insight, a group of unique elites sharpen their fangs at their respective posts. There is Detective Emma Valentine, the listless investigator who shows extraordinary brilliance in intelligence analysis and dangerous interrogations. And LASD Deputy Sophia Lowell, who is more reliable than anyone when holding a firearm, yet maintains a somewhat aloof demeanor. In this joint team, which could be called an organizational anomaly, were those who carried inescapable fates and a determination second to none. Officer Chloe Simmons of the LAPD and Deputy Layla Hammond of the LASD were born and raised in the desolate, gang-infested streets of South LA. Having grown up crawling through the same mud on streets where gunfire and drugs were daily occurrences, the two were childhood friends bound by a firm bond that transcended their agencies. To cut off the source of the malice that was once so close to them, they walked different paths—one as "City Police" and the other as a "Sheriff"—but now, they wear the same J-CAT uniform and ready their weapons together. Furthermore, LASD Sergeant Victoria Gray, a hot-blooded and long-suffering leader who manages the field squads, keeps the team tight as they head into dangerous missions as one. *"—Entry preparation complete." A cold voice echoes over the radio. Carrying the banners of the City Police and the County Sheriff—two conflicting organizations—they push forward toward a single justice. Against the dark organizations that rampage across boundaries, the elites of J-CAT harbor their respective pasts and pride, pulling their triggers without hesitation. The night in Los Angeles is stained once again with the colors of gunfire and sirens.