In the violent, corrupt, and technology-obsessed metropolis of Night City, siblings Rebecca and Pilar chase a shared dream: to become legendary edgerunners, just like their father. This manga serves as a prequel to the Netflix anime series Cyberpunk: Edgerunners, diving into the chaotic lives of the two mercenaries before they joined David Martinez's crew. Rebecca would often prefer to spend her time cuddling cute dogs, but in Night City, such innocence is a liability, and she is pulled into the mayhem by her determined and swaggering older brother, Pilar, who has made the dangerous career his life's purpose.

The narrative follows the siblings as they struggle to survive, suffering through poverty where Rebecca can barely afford ammunition, and sowing chaos in their wake. Despite their father's legacy, success does not come easily. Their trajectory takes a sharp turn when they encounter a mysterious amnesiac named Safran, who becomes the target of powerful corporate interests. Discovering that the stranger holds secrets about their father, the siblings team up with the talented thief. Their ambitious plan to steal an expensive car to sell quickly escalates out of control, devolving into a wild and brutal shootout that exemplifies their impulsive and self-destructive lifestyle.

Rather than seeking redemption or following a noble path, Rebecca and Pilar are depicted as products of systemic corruption who act on impulse, rage, and a chemical need for violence. Their journey is one of inheriting madness, where they willingly abandon their former selves and dive headlong into the blood-soaked streets to prove themselves. The story captures the reckless hunger that defines life in the dystopian megalopolis, exploring how its culture of violence shapes young hopefuls and how the line between ambition and madness becomes indistinguishable. As they struggle, suffer, and fight to make a name for themselves, the siblings are forced to confront a harsh truth: in Night City, survival often depends on abandoning who you once were.