In the 19th century, Park Yeon U’s husband dies, revealing a long-time heart condition. Devastated, she’s then kidnapped and thrown into a well. When she wakes up, she’s in modern-day Seoul, where a man who looks exactly like her deceased husband saves her. This man, Kang Tae Ha, is a corporate heir with a traumatic past and a heart condition. He avoids relationships but agrees to a contract marriage with Yeon U to fulfill his dying grandfather’s wish to see him married.