- Set in war-torn 1930s Shanghai, Mr. Lu is ambushed during a meeting with the Japanese army but is saved by Watabe, his brother-in-law, who sacrifices his life to save him. Mr. Lu`s family, however, ends up getting killed by the Japanese. After years have passed and the Sino-Japanese war draws to a close, Mr. Lu visits Mrs. Wang, the abandoned wife of his former boss. She tells him that Watabe is not dead and is actually a Japanese spy who is responsible for the deaths of his family members. Mr. Lu now searches for Watabe to make him pay for his sins.