The story of Princess Pyeonggang who was born as a princess but raised to be a soldier for Goguryeo. She dreams to be the first female Taewang of Gorguryeo but is confused about the new feelings experienced after meeting On Dal.

Yi-Hwan (Lee Min-Ki) is a former professional baseball player. He was involved in fixing games and lost everything. Gang boss Sang-Ha (Park Sung-Woong) runs a money lending business and a gambling location. He makes Yi-Hwan work for him. Meanwhile, Yi-Hwan falls for bar owner Yeon-Soo (Lee Tae-Im).