Caldrith Vergewas less a city than a mass grave of ambition.Submerged centuries ago after a failed fusion-core experiment tore the seabed open, it had been sealed beneath layers of collapsed steel, irradiated ocean currents, and official denial.Now, it was their next stop.The stealth cruiser — Eclipser — glided silently above the sunken ruins as sonar mapped twisted buildings, fractured spires, and long-dead monorails swaying in underwater currents.Mags whistled. “Cheerful place.”“I see your sarcasm module is fully online,” Zan replied.“Always.”Lyra studied the deep-scan feed. “Vault Meridian’s buried in the city’s heart. Whatever they did down there… it stayed classified for 243 years.”Kai stared at the screen. “Until now.”They descended in submersible pods, guided by Zan’s live sonar.The pressure grew. Visibility dimmed. Shadows passed the external lights — silent, unidentifiable shapes. Once, Mags swore she saw a blinking eye in the ruins.“I vote we never come back here,