The special follows award-winning actor Mackie in his hometown of New Orleans, where he grew up boating and angling and still practices the sport to date, a passion he now shares with his four sons. Throughout the documentary, Mackie is on a personal mission to keep the peace between coastal communities and sharks. Diving fin-first, he comes face-to-face with the ocean’s apex predators, swimming with several enormous sandbar and silky sharks and tagging a formidable 7-foot bull shark.

In this episode, Josh Gates explores the remains of an American ship sunk by a Nazi U-boat during WWII. The quest takes a thrilling turn as he teams up with shark expert Tristan Guttridge, who introduces a groundbreaking approach: using sharks as underwater spies to uncover the wreck. This innovative strategy promises to shed new light on the shipwreck and the events surrounding its demise decades ago.