In the 25th year of the Republic of China, Jinmen was filled with neon lights and flames of war. Su Yanqiu, a famous actress with billowing sleeves and melodious singing on stage, is the "Living Du Liniang" sought after by theater fans. Off stage, as the leader of the "Spark Club", she secretly traces the lost anti-Japanese arms and works for the country.
Shen Jinghan disguised herself as a man and took charge of the military in the name of a warlord marshal. On the surface, she traced the whereabouts of arms, but in fact she was helpless about the warlords' melee and the suffering of the people. A stage confrontation and a warehouse shootout caused the two people's identities and positions to collide.
Lieutenant General Lin Mo is a loyal guard, hiding complicated feelings for Shen Jinghan; Beiyang's daughter Zhang Manting, as Shen Jinghan's engagement partner, is ignorantly involved in the turmoil.
When the costumes are taken off and the military uniforms are put on, the interests of family and country are intensely intertwined with personal emotions. In troubled times, the four people jointly write a legend about faith, choice and redemption in the light, shadow and smoke of flags.
