Li Daokun, a modern young man who accidentally traveled to the late Tang Dynasty, only has a mysterious "magic mirror" in his hand - the mirror can not only reflect people's hearts, but also gain insights into the past and present, and glimpse into the future. Facing the powerful eunuchs, the self-respecting vassal towns with soldiers, and the declining national destiny of the Tang Dynasty, Li Daokun used mirrors as his eyes and wisdom as his blade, dealing with the court and the world. See how he clears the fog step by step, using his insights beyond the times and the power of the magic mirror to help the building collapse, and write the best legend in this worst era.
