Kang Pil-su, the executive director of the strategic planning office of Cheong-Ah Group, is admired and envied by people for his smart and sharp mind and excellent work ability. He concealed the fact that he was a member of the Cheong-Ah Group and acted as a lackey of the Cheong-Ah family, but in fact he was a "dog that trained the master". He wanted to use love as a means to revenge, but after meeting the free and unrestrained Moo-hyun, he fell into the trap of love. "Flower of Money" describes the desires and love in people's hearts dominated by money through the four-corner relationship between Pil-su, a key figure of the Cheong-Ah family, Moo-hyun who is determined to get the destined love, Fu Cheon, a third-generation rich man who is surrounded by dangers, and Fu Cheon's secret lover Seo-won.