In order to catch a glimpse of the grace of His Majesty Zetian, the heroine of the Tang Dynasty, and not wanting to miscalculate, I arrived at the end of the Sui Dynasty decades earlier, and happened to meet Sun Simiao, known as the Patriarch of Medicine King... A generation of medical immortals and modern souls, two people who were originally unrelated, were involved in each other, and had a secret love. Let's see how they overcome obstacles and get closer to each other in troubled times!