Professional diver Ludovica witnesses her diving school go bankrupt due to her partner's debts to the mafia. Left alone and burdened with too many debts to pay, she finds herself forced to extract TNT from a Second World War shipwreck, sunken in the middle of the sea, on behalf of the mafia, which in the meantime has declared war on the Italian state. Along with Sabrina, the partner of Rocco—one of the trusted men of mafia boss Don Calò—Ludovica is forced to dive off the coast of Sicily, into the wreck of a ship named after the ancient Greek goddess Aphrodite. If Ludovica follows the mafia’s demands, extracting a daily quota of TNT blocks, her debt will eventually be cleared, and she will regain her freedom. The three protagonists—Ludovica, Rocco, and Sabrina—live in an old, abandoned saltern, isolated from the rest of the world. Ludovica, a captive and naturally distrustful of her captors, slowly begins to bond with Sabrina, a young woman with a childlike appearance and unexpected innocence. Ludovica and Sabrina are two very different women: the former has traveled the world as a diving instructor, while the latter has never left Sicily. During their time together by the sea, they discover a shared sensitivity and a mutual desire to change their lives.