On the beacon island, she is the quietest canary in the cage and the deadliest phoenix leaf in the dark night.
In order to save her seriously ill father, Lin Wanqing was forced to marry warlord Shen Shichang, becoming his youngest and most inconspicuous third concubine. Everyone thought she had resigned herself to her fate—until the sycamore leaf brooch with the words "Waiting for Letters" engraved on it was pinned to her front by Shen Huaian, the eldest son of the Shen family.
Shanghai has become an isolated island, and everyone wears masks to survive. Su Mingsheng, a popular Kunsheng actress, confuses all living beings on the stage, but off the stage is an underground intelligence agent who travels at the tip of the sword; Jiang Wei, the eldest daughter who has returned from studying abroad, is dealing with family marriages while delivering top-secret information for her beliefs; and that old-fashioned woman who married early and seems ordinary is actually her only contact with the outside world...
Six men and women with different identities are bound by a top-secret mission concerning the life and death of their country and their country. In the gap between conspiracy, betrayal and gunfire, the most forbidden love is like wildfire - she is his nominal "little mother", a symbol of his hatred for his father, but also the only light that can illuminate the abyss of each other in the dark night.
When the mission comes to an end and their relationship is revealed, the peace they maintained with lies is completely shattered. Are they going to live alone and save their remaining lives? Or give it all and bet on the dawn?
In this life-and-death gamble in the name of love and with the country as the stake, no one can escape unscathed.
Falling in love amid lies, standing side by side amid suspicion, on an isolated island that is about to collapse, they use their love and faith to make a huge gamble.
