Three kilometres beneath the Pacific, marine biologist Dr. Lena Vasquez follows an impossible sonar anomaly into a trench that shouldn’t exist — and surfaces with evidence of a civilization that predates every record of human history.
The Story
The research vessel Meridian is mapping thermal vents along the Mariana back-arc when its sonar returns a geometry that makes no geological sense: a perfect rectangle, 400 meters long, buried beneath the sediment floor. Vasquez convinces the ship’s captain to divert the deep-rated submersible Nereid for a closer look. What she finds is a stone archway inscribed with symbols that bear no relation to any known language — and beyond it, a pressure-sealed chamber filled with breathable air.
The discovery triggers a geopolitical scramble on the surface. A corporate oceanographic firm attempts to assert salvage rights; a military task force moves to quarantine the site; and Vasquez, running out of consumables and dive time, must decide whether to document the find or protect it by burying the evidence.
Cast & Crew
- Director: Ji-Won Park
- Starring: Daniela Vega, Idris Okafor-Williams, Rinko Kikuchi
- Visual Effects: Framestore
- Original Score: Hildur Gudnadottir
We came down here to study the ocean floor. Instead the ocean floor studied us.
Dr. Lena Vasquez
Park shot the surface sequences on open water off Palau and built the submersible interiors as full-scale practical sets on hydraulic gimbals. The underwater ruins were realized through a hybrid of miniature photography and digital extension, giving them a tactile, weathered presence that purely digital environments rarely achieve. Gudnadottir’s score — recorded with hydrophones submerged in a flooded quarry — provides the film’s most unsettling texture.