Dead men tell the ocean’s secrets. Four marine observers vanish at sea under suspicious circumstances. This gripping investigation uncovers why. Traveling from Fiji to Ghana, Spain to the US, this powerful film reveals the dark underbelly of the global tuna trade, where profit outweighs human life and environmental destruction is buried beneath the waves. Through exclusive footage and unprecedented access, a team of international investigators exposes the rampant criminality, cover-ups, and violence tied to industrial overfishing. As the ocean’s silent guardians’ risk everything to document the truth, their stories demand action. This is a high-stakes exposé on the hidden cost of the seafood on our plates.