Nézze meg a Teljes Film Magyarul. First half of film portrays life in port, including rum issue, distribution of letters, and taking on ammunition, the remainder tells the story of an action against German S-boats, in a stock-shot compilation including some captured film. Officers briefed; boats leave harbour, put to sea, "action", a Nazi naval flag is reclaimed from wreckage in the sea, and the motor torpedo boat (MTB) returns to port flying it below the British White Ensign. Film ends with a sequence showing the funeral of a Canadian seaman.