In the shadowed underbelly of 2039 Tokyo, the aftermath of a critical mission forces top agents to confront the lingering digital echo of their fallen target. Mercy's fragmented presence begins threading through the vast network, reaching those vulnerable to synthetic highs and eroding their sense of self. As the threat gains ground across interconnected systems, the pair races to contain the spreading influence before it achieves irreversible dominance. Their efforts reveal just how deeply the virtual ocean can claim new territory.