Amidst a backdrop of conquering nations, Queen Cecia's primary concern isn't the battles won but rather her discomfort in a restrictive corset. Tasking her brother, Duke Ennon Lionheart, with finding a solution, she inadvertently sets the stage for change. In a twist of fate, Yuri, a struggling designer from Korea, perishes only to be reborn in Cecia's realm. Determined to modernize fashion, Yuri assumes a male guise and infiltrates the royal court as a designer. However, tensions rise when Ennon stumbles upon Yuri's secret identity, sparking unforeseen consequences.