Betrayed by her fiancé and her best friend, Seoyun loses her company and her life. She teams up with Dohyun, CEO of an investment firm, to take her revenge. She falls in love with him, then learns that the original architect of her downfall was Dohyun himself. Hiding the truth, Seoyun accepts his proposal, so she can take everything from him at the very moment he is happiest.