When marine biologist Dr. Elena Vasquez discovers an ancient underwater city, she stumbles upon a dark secret that threatens her life and the lives of those she loves. As she and her team delve deeper into the depths, they must confront their worst fears...

In the depths of the ocean, a video captures a chilling encounter that blurs the line between the living and the dead, leading a group of friends on a harrowing quest to uncover the truth behind the enigmatic Submerged Shadows....