For Andr é Laurent (Jean Gabin), the captain of the tugboat Cyclone, and the crew, life was divided by high winds and torrential rains at sea and warm families on shore. On a thrilling voyage, Andr é saved the enchanting Catherine (Mich è le Morgan) and fell for it. He can't help but stay away from his gentle but anxious wife of ten years, Yvonne (Madeleine Renaud). Jacques Plainville's screenwriters create an excellent atmosphere. The special effects of this film on sea storms can be regarded as a pioneer in the 1940s.