Following the story of a family who become wealthy merchants through the art trade in the late Joseon Dynasty, this story revolves around the secret of a son who abruptly returns after disappearing and his half-sister who pursues the truth behind his disappearance. Half-brother and sister, Jae Yi and Hong Rang, have been close and cared for each other since their childhood. However, one night when he was 8 years old, Hong Rang suddenly disappeared while looking for Camellia flowers for his sister. Hong Rang grew up like a prince, but he disappeared when he was young, then he abruptly returned after longer than a decade without his childhood memories. Because of this his true identity became a mystery to his surroundings. Jae Yi lives with an abusive stepmother and a neglectful father. She is an intelligent girl with a charming appearance and mysterious beauty. However, in contrast to her beauty, she has a lousy personality and is very skilled at scamming people. She lived by relying on her half-brother Hong Rang, however, he confronted a giant ordeal when he disappeared. (Source: Korean = NamuWiki || Translation = MyDramaList) ~~ Adapted from the novel "Tangeum: Swallowing Gold" (탄금) by Jang Da Hye (장다혜).