Geom is the son of virtuous nobleman Lee Won Ho, a trustworthy supporter and brother to the king and a central member of the secret organization Cheonwoohoe, comprised of important nobles, with the king as their leader. He lives peacefully in a plum-tree-surrounded house with his wife, daughter, and son. However, a mysterious rumor is spread that he is plotting to overthrow the king. Knowing about this, the king kills Lee Won Ho as he believes that 'two suns cannot exist in the same sky'. Geom witnesses the incident from the inside of a safe where his father hid him. Later, he is saved and adopted by a retired thief, Seo Dol, after he becomes stricken with amnesia from the shock of losing his father and being forced to throw a rock at his mother's head to prove that he wasn't her son.