Su Yin disguised herself as a man and hid in Zuiyue Tower as a bookkeeper. She unexpectedly gained the power of touching money and listening to hearts. As long as she touched money, she could hear the most secret thoughts in the owner's heart. With this ability, she easily exposed the richest man in the capital, Qian Wanwan, and secured her position as the number one accountant in Zuiyue Tower.
In an accident, she bumped into Xiao Yan, the cold-faced Prince of Zhenbei, and she could hear his crazy inner confession at the touch of her fingertips. The cold-faced prince turned out to be a crazy man who had a crush on her. Xiao Yan frequently approached her on the pretext of auditing her accounts, secretly stuffing her with love letters, and silently protecting her. There was a complete contrast between her duplicity and her insincerity.
Su Yin was on guard at all times because of the secret of her daughter's identity, but Xiao Yan came to her rescue time and time again. Shen Yu, the daughter of the household minister, coveted the prince's power and regarded Su Yin as a thorn in his side. He set up poisonous schemes, forged false accounts, made things difficult for her in public, and even cooperated with the government to take a physical examination, vowing to expose her identity.
Relying on his mind-reading skills and shrewd mind, Su Yin uncovered fake gifts at a banquet for dignitaries and escaped from the Shen family's conspiracy. Step by step, Su Yin uncovered evidence of the Shen family's embezzlement of military pay and collusion with the enemy and treason. In order to protect Su Yin, Xiao Yan did not hesitate to fight against the imperial power, publicly recognized the name "Duan Sleeve", and even gave up his title of prince.
As the truth was revealed, Su Yin finally confessed the secret of mind-reading and her daughter's identity. Xiao Yan already knew it and was filled with deep feelings. The two teamed up to overthrow the Shen family in the Jinluan Palace, exposed Shen Yu's fake pregnancy scam, and brought the traitor to justice.
In the end, Xiao Yan resigned from Wang Jue, retired to the south of the Yangtze River with Su Yin, and opened a "Su Qianzhuang". Su Yin worked as the accountant and took charge of the money, and Xiao Yan stayed by his side as the bodyguard. From then on, there was no cold-faced prince in the world, only a couple of immortals who guarded the account books and counted their true feelings.