In the sixteenth year of the Republic of China, Haicheng was in turmoil. Wen Shuyue, a cryptography prodigy who returned from studying abroad, was forced to sign a marriage contract with Lu Xingzhou, the marshal of Haicheng Governor's Mansion, in order to save his father who was framed by others. She originally thought it was just a makeshift deal, but she stepped into the abyss of espionage. On the surface, Lu Xingzhou is a bohemian playboy, but secretly he is secretly laying out a plan to obtain the enemy's top-secret code. The two fell into a trap between temptation, plotting and protection. When Wen Shuyue discovered that the marriage contract itself was a carefully designed trap, love and hate were already deep in her bones. In the troubled times, with the smoke and fire as secret as a knife, can they find each other's only truth in the desperate situation where truth and lies are intertwined?
