When the last trawler of Pisces sails into a storm, the fishermen aboard must confront a centuries-old siren's curse, leading to a tale of love, betrayal, and the ocean's secrets....

Deep in the heart of the Li River, a group of fishermen guards a secret that has been passed down through generations. When a mysterious figure threatens their way of life, the fishermen must uncover the truth behind the Night's Keepers to save their home...