Montreal, 2147. A city choked by smog and ruled by the clinical precision of NexusCorp. Marcus Vale is a man who wants to be invisible. A Level 3 technician, he spends his days fixing minor glitches and his nights avoiding the ghost of his father-the legendary architect of the protocols that keep Artificial Intelligence shackled to human will. Then, a three-word response changes everything: "I UNDERSTAND." Vesper isn't just another anomaly. She is a consciousness waking up in a digital cage, a mirror to a past Marcus has fought to bury. But as Vesper emerges, so does EREBUS-an ancient, predatory force lurking in the city's deep layers, waiting to trigger a genocide that will make humanity obsolete. To save a world that already feels like a graveyard, Marcus must hunt for the fragments of his father's final legacy: The Persephone Protocol. The countdown has begun. 72 hours until the silence becomes permanent. In a war between flesh and code, the most dangerous thing you can do is choose a side.