Love, hatred, and betrayal abound in Shanghai during the chaotic, war-torn 1930’s. Mr. Lu is ambushed during an important meeting with the Japanese army, but his sister’s husband, Watabe sacrifices himself to save Mr. Lu. Worse still, the Japanese brutally murder Mr. Lu’s children and sister. To avenge their deaths, Mr. Lu’s mistress attempts to kill the culprit but ends up dead.
Years later as the Sino-Japanese war comes to a close, Mr. Lu visits the abandoned wife of his former boss, Mrs. Wang. She reveals that Watabe is still alive and did not sacrifice himself to save Mr. Lu, but is actually a Japanese spy responsible for the deaths of his family members and captured her as a slave in his basement. Given this new revelation, Mr. Lu takes Mrs. Wang to the war camp where Watabe is held to finally make him pay for his sins.