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After being betrayed by his girlfriend in college, Kihyun spends his days in a lethargic state. One day,the man that his ex-girlfriend cheated on him with, Youngwon comes as a new employee in his company. Kihyun ignores the past because he doesn't want to think about it but then he hears some unexpected things from Youngwon.
The Yang and Kim families were once rival gangs with construction company fronts that spilled blood over a smidgen of gold. But a new company has entered the picture, and now both their stakes are at risk. Reluctantly, they form an alliance… sealed with an arranged marriage between their children, Hyejin and Moogahng! However, Hyejin’s past traumas keep her heart guarded, and Moogahng shrouds himself in mystery. It doesn’t seem like any amount of blood, tears, or gold will make their marriage better. But can love make this troubled pair work?
This is an era that belongs to the warriors. They are the law. Powerful and honorable, they decide life and death. Blood drawn by the swords are the melody of this era. In the midst of all this a lone boy, after the death of his grandfather, sets on journey to find his father who fights in the battlefield.