A team of activists, filmmakers, and freedivers embark on a covert mission to expose a deadly secret hidden in a remote cove in Taiji, Japan. By utilizing state-of-the-art techniques, they uncover a horrible annual tradition of unparalleled cruelty. A provocative mix of investigative journalism, eco-adventure, and arresting imagery makes this an unforgettable and courageous story that inspires outrage and action.