Sinopsis momentánea en inglés: During the Sino-Japanese War (1937–1945), Cuiying (Bai Hong) flees with her father (Ke Youming) from the Japanese invasion. Unfortunately, Cuiying’s father dies on the road. Cuiying arrives in Shanghai alone and works as a singer in a club, where she meets Lingyun (Ke Junxiong) and Zhaoqun (Tian Qing). Zhaoqun happens to be Lingyun’s uncle. Moreover, Zhaoqun is rich and powerful because he works for the Japanese government. Although Cuiying falls in love with Lingyun, she leaves him and marries Zhaoqun instead. Lingyun is broken-hearted and decides to study abroad.Upon Lingyun’s return from the UK, he begins working for Zhaoqun. Zhaoqun wants Lingyun to marry his daughter, Aili (Liu Qing), and Cuiying reluctantly agrees to act as a go-between for the young couple. Meanwhile Zhaoqun’s work is constantly sabotaged by the Chinese resistance, led by Secret Agent Heaven No.1. Therefore, it becomes the top priority of Zhaoqun’s subordinate, Captain Wan (Hu Dou), to capture the enemy. But who is Secret Agent Heaven No.1?
