True love is giving one's life for another. Sky, son of an upcountry mafia has to live with Sun, the bodyguard that his father sent to protect him without his consent. Sky resists his father command and try to pull Sun's leg. But all the tricks seem to draw them closer instead. Then, they have to go through the deadly situation times and times together. Sky begins to feel very good with Sun and Sun feels the butterfly flutter in his chest at the same time. But Sun has to restrain his feeling. And when Sun has to risk his life to protect Sky again, all circumstances reveal the truth that Sky's father has fostered Sun because Sky and Sun have the same very rare blood-type "The Golden Blood". Sun has been continually given his blood to stock up in case of any mishap happen to Sky. This now binds them even closer and immensely. Will God or destiny helps them to be together? Or will there be anything to pull them apart?
