Ha Woo Shin (Ji Sung) and Song Soo Hyun (Ji Sung) are twin brothers. Ha Woo Shin is a best-selling crime novelist and Song Soo Hyun is a prosecutor at the Central District Prosecutor’s Office. Twenty-two years ago, when they were children, their stepfather was murdered. Now they discover that their biological father is the person who killed their stepfather and who was sentenced to death. Ha Woo Shin and Song Soo Hyun soon discover that their biological father was framed for the murder of their stepfather and set out in search of the truth. In the process, they meet Eun Hye Soo (Seo Ji Hye) and Kim Seo Hee (Lee Soo Kyung). Eun Hye Soo is married to the eldest son of the Haesong Group and secretly helps Ha Woo Shin. Kim Seo Hee is a local news reporter for TNN. She is a principled person who is passionate about her work. She has a secret, which is linked to the twins Ha Woo Shin and Song Soo Hyun.