Haunted by a past tragedy involving a spacetime anomaly, disgraced mecha pilot Kai Nakamura lives in obscurity on the frontier world of New Tombstone. His life is upended when he discovers the disaster was a corporate conspiracy centered on a weaponized relativity phenomenon known as the Edge of Silence. To uncover the truth and seek redemption, Kai must pilot Chronos, an experimental mech capable of bending time itself. As he battles a ruthless corporation, every second becomes a battlefield, and the very fabric of reality trembles—where silence lies at the edge of light speed.