[Kong Sheung Hung/江尚紅(Wayne Lai/黎耀祥)] is a team leader for the anti-Japanese guerrilla army and he meets [Cheung Gei Sang/張寄生(Myolie Wu/胡杏兒)] during the war. Facing the invasion of Japan, the two become spies and hide in Guangzhou to carry out their missions.
Cheung Gei Sang becomes a popular Cantonese opera star to gather intelligence for the agency. At the same time, she discovers a rival spy agency and an exiled group of royal descendants from the fallen Qing empire. She also re-encounters her old lover [Chow Sai Gai/周細雞(Edwin Siu/蕭正楠)], who has become a spy for an enemy organization. Chow Sai Gai hates Kong Sheung Hung to the core as they are rivals in love and also in politics. With the country in turmoil, they look past their hatred for each other and come together to fight against the Japanese.
People from all walks of life have gathered in Guangzhou, targeting a Japanese businessman named [Suzuki Kazuo/鈴木一雄(Wayne Lai/黎耀祥)], who has knowledge of the lost gold treasure from the fallen Qing empire. As Kong Sheung Hung is about to capture Suzuki Kazuo, he's shocked to discover that they have the same face....