A woman puts on the face of her dead sister and marries the brother of her enemy for revenge. Bright Na-Yeon supports her boyfriend Tae-Joon, who is from a poor background, and has even given up entering a university. But Tae-Joon dumps her for his success and goes with Se-Jin, who is a granddaughter of Baekdoo Company president. Arrogant and tough Do-Hee, Na-Yeon’s twin sister, works as a reporter at a weekly magazine. After Na-Yeon’s death, Do-Hee decides to take revenge. She takes on the identity of her sister and meets Hwi-Kyung, the successor of Baekdoo Company.