O Su is an orphan who was abandoned by his parents at an early age. The guy doesn’t care about anything and leads a meaningless life. After the death of his first love, he becomes a high-class player and a playboy. He also doesn’t shy away from living off wealthy women. Upon meeting the heiress of a corporation, O Yon, he pretends to be her long-lost brother. And then he plans to kill the “sister,” and, by becoming her heir, get rich. O Yon is the sole heiress of a gigantic conglomerate. The girl has a hard life; she tragically loses her parents, and her sight at fifteen, and later, her brother disappears. She is very lonely and, not trusting people, tries to stay away from them. Pak Chin-son is O Su’s best friend and his right-hand man. He dreams only of earning a lot of money and buying his father a cattle farm. Moon Hi-sun is Hi-ju’s younger sister, O Su’s first love. She, although she tries to despise O Su for abandoning her sister, understands that she cannot manage to do so.