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?