An adventurous movie in the ocean.

When marine biologist Dr. Alex Carter discovers a hidden underwater city off the coast of Greece, he assembles a team of experts for an unprecedented ocean expedition. The team, including a daring deep-sea diver, a tech-savvy engineer, and an enigmatic historian, sets sail on the state-of-the-art research vessel, the Neptune. As they dive deeper into the mysteries of the ancient city, they encounter stunning marine life, dangerous underwater currents, and rival treasure hunters who will stop at nothing to uncover the city's legendary treasures. Battling the elements and their own fears, the team must decode the secrets of the deep blue before their discovery is lost to the depths forever.