The story is set in Shanghai in 1931, when the Imperial Japanese Army has been dispatched to mainland China due to the relatively recent First Sino-Japanese War, Russo-Japanese War, and World War I. In this cosmopolitan city of intrigue, there is a special military spy organization called "Sakurai Kikan" that has since been buried in history.

Night Raid 1931/ Senko no Night Raid (TV) Special Edition: Complete Box Set (DVD) Episode titles:

• 1. Rescue
  
• 2. Rondo of Reminiscence
  
• 3. A Shadow Falls on the Big Four
  
• 4. Camera and Bun and Stray Cat
  
• 5. A Negative Summer
  
• 6. Ominous Night
  
• 7. Incident
  
• 8. In the Frozen Lands
  
• 9. The New Capital
  
• 10. East is East
  
• 11. Covert Investigation
  
• 12. Nightraid
  
• 13. A Glimmer of Hope, at the Very Least