Off the western tip of France, the Raz de Sein is a six-kilometer strait between the Pointe du Raz and the Île de Sein, and sailors call it Brittany's most dangerous passage. The film follows the people who live with that danger instead of avoiding it. Olivier Mével, captain of the boat Mundaka, still fishes the strait's rough water for a living, while Jean Bulot, nicknamed Captain Storm, recalls decades commanding the rescue tug l'Abeille Flandre, pulling stricken ships out of the worst conditions the coast can produce. Others go looking for the storms on purpose: Bruno André chases the biggest waves for the adrenaline, filmmaker Jean-René Keruzoré has spent ten winters stalking storms with a camera, and surfer Thomas Traversa rides swells most people would run from. Through interviews and footage shot in the middle of the weather itself, the film moves between the fishermen's practical courage and the storm hunters' pursuit of something closer to obsession, both drawn to the same stretch of sea for different reasons.