18th-century France. It was the era of the beauty revolution... Lucas, who works in the cosmetics development department, may be shy when it comes to romance, but she has achieved success in her work and is gaining recognition from those around her. One day, while traveling to France for the development of a new product in collaboration with a prestigious brand, Lucas gets lost in the depths of a hotel and accidentally time-travels to the 18th century! The only weapon she has at her disposal is the cosmetics she created. This is the romantic tale of an intelligent woman in her late twenties who must navigate through turbulent times using her wit. The curtain rises on her time-traveling adventure!

France, 1780. During the reign of King Louis XVI of the Bourbon dynasty, there was a princess who connected the people with the royal family. A young man was captivated by the princess, who vowed to remain single for life and continued to bestow mercy on the people with the "hand of God"...! (Source: Kadokawa, translated)