Golden Era.

This is a story about two boys, one poor, Park Kwang Chul and one rich Lee Jae Hoon, who meet in unlikely circumstances and become best of friends. The boys meet again as young men and work together as bankers. They also help Hee Kyung, who was raised like a sister to Park Kwang Chul, find her real father and in doing so, discover painful secrets from their past.