

During the naval battle of Midway in WWII, the battleship Mutsu was in its home port in Japan. The ship's officers and crew were frustrated at not being able to take part in the fighting. They had been held back by orders from the Naval Ministry, but there was also a plot by saboteurs, who were trying to prevent the sailing of the Mutsu. Director Komori developed a suspenseful plot by including a fictional adaptation of the Russian spy Richard Sorge, who had been captured in Japan and subsequently executed. Komori brings a fictional Russian spy to the screen by portraying him as a military attaché at the German embassy. As Germany was an ally of Japan in WWII, a secret agent being a mole in the German embassy is a perfect cover. The interaction of the saboteurs and the officers and crew of the Mutsu make an exciting story.
| Actor | Role |
|---|---|
| Lt. Commander Fushimi | |
| Lieutenant Matsumoto | |
| Misako Akashi | |
| Yukie Gorai | |
| TToshio HosokawaLieutenant Ikegami | Lieutenant Ikegami |
| KKeinosuke WadaWarrant Officer Gorai | Warrant Officer Gorai |
| Captain Hirano | |
| Ensign Katsunuma | |
| JJotaro YukiNot listed | Not listed |
| YYōji MisakiNot listed | Not listed |
| KKyōji KokonoeMineichi Koga | Mineichi Koga |
| RRyuji WakamiyaLieutenant Kurosawa | Lieutenant Kurosawa |
| SSōzaburō KikuchiSoemu Toyoda | Soemu Toyoda |
| HHiroshi NakaokaWarrant Officer Kamichika | Warrant Officer Kamichika |
| CCarla RichterNot listed | Not listed |
| WWilliam RossNot listed | Not listed |
| RReiko SetoAkiko | Akiko |
| Shigetaro Shimada | |
| Lieutenant Kaneda |