During the war years of the Anti-Japanese War, agent Lu Chengzhou lurked in the core of the Japanese army, dealing with the enemy camp with forbearance and resourcefulness; female intelligence agent Jiang Shuying carried her faith and delivered key intelligence on the tip of a knife. A false "divorce" caused the two to say goodbye to their past warmth, but they silently guarded their common ideals on their respective battlefields.
From the close surveillance of No. 76 To the thrilling exploration in the department store, from the jazz code broadcast throughout the city to the "assassination" scam at the engagement ceremony, they work side by side in the dark, using disguise to cover up their true feelings, and persevering at the expense of interpretation. The pursuit of the Japanese army, the conspiracy of the Wang Puppet, and the mission of the organization pushed them to desperate situations time and time again, but the secrets hidden in the cufflinks, the rings engraved with gardenias, and the promises made in the alleys of Nanjing have always been the eternal light in each other's hearts.
When the dawn of victory in the Anti-Japanese War broke through the night sky, the latent years were finally over. Lu Chengzhou and Jiang Shuying bid farewell to the smoke of gunfire and embarked on the road to the light together. They walked through the rebuilt town, listened to the people's stories, and made a lifelong promise under the gardenia tree - love and faith go hand in hand. After the darkness, there is a future full of hope for them.
