A young girl sold into servitude is given the name "Seo-hye" by Kwon Yoon, the noble son of a powerful family. Despite her lowly status, Seo-hye finds herself drawn to Yoon's gentle nature, and he, too, begins...

It is the Taisho Era.Sayo, who was born as the "bird in a cage" of the Tenkanji family, one of the most prestigious families in the financial conglomerate world, had a secret that she hid. The curtain rises on...