JJ

The Mariana Trench was never the deepest place on Earth. When an international deep-sea expedition uncovers a hidden abyss beneath the ocean floor, the discovery rewrites everything humanity thought it knew about the sea. Inside this unexplored world are thriving prehistoric ecosystems, colossal megalodons larger than any creature ever recorded, and countless marine species believed to have vanished millions of years ago. But nothing compares to what lies at the very heart of the abyss—an immense underwater city, perfectly preserved beneath miles of crushing darkness, its towering temples, forgotten palaces, and mysterious statues standing as silent proof that an advanced civilization once ruled the depths. Unable to decipher the city’s origins or understand the impossible creatures surrounding it, Doctor Wang recruits the only scientist whose theories have always seemed years ahead of modern science: Professor Park Jimin, Harvard University’s youngest and most renowned marine biologist. Although reluctant to leave his quiet life of teaching and research, Jimin agrees to join the expedition, believing the city could become the greatest archaeological and biological discovery in human history. But from the moment he enters the abyss, the expedition takes an unexpected turn. The ocean seems to recognize him. Ancient predators that should see him as prey hesitate in his presence. Long-forgotten symbols awaken memories he cannot explain, while the mysterious ruins respond to his touch as though they have been waiting centuries for his return. With every dive, Jimin begins to question everything he thought he knew about himself, especially when the sea starts feeling less like an unexplored frontier… and more like home. As rescue specialist Jeon Jungkook and the rest of the expedition fight to survive the dangers hidden beneath the waves, they slowly realize that Professor Park isn’t simply the world’s leading expert on the ocean. He may be the reason the city has awaken