The story of Han Yi-joo, who chose a contract marriage to avenge her husband and family, and Seo Do-gook who postpones a contract marriage to welcome her as his wife.

Han Yi-Joo (Jung Yoo-Min) is a painter. She was adopted by Han Jin-Woong and Lee Jung-Hye (Lee Min-Young). Her father runs Hanwool Financial Group. Yet, Han Yi-Joo was not loved by her parents or her younger sister Han Yoo-Ra (Jin Ji-Hee). She was always isolated from her family. Now, Han Yi-Joo is married to Jung Se-Hyeok. She learns that her husband Jung Se-Hyeok loves her sister Han Yoo-Ra and not her. On that same day, Han Yi-Joo gets into a car accident and dies. When Han Yi-Joo wakes up, she finds herself back in time when she was engaged to Jung Se-Hyeok. To change her fate and take revenge on her family, she breaks off her engagement to Jung Se-Hyeok. She then approaches Seo Do-Guk (Sung Hoon), whom her younger sister Han Yoo-Ra wants to marry. Seo Do-Guk is the grandson of the Taeja Group's founder. He is a smart and handsome young man. Han Yi-Joo wants to enter into a contract marriage with Seo Do-Guk and he willingly accepts, but he wants the contract marriage to become a real marriage.—AsianWiki

As the eldest daughter of a wealthy family, Han Yi Joo (Jung Yoo Min) should have grown up wanting for nothing. Unfortunately for Yi Joo, that simply wasn't the case. Raised with the knowledge that she was never loved by either her parents or her younger sister, Han Yoo Ra (Jin Ji Hee), Yi Joo spent her formative years isolated from her family. Now an adult, Yi Joo finds joy in her work as a painter, but in all other aspects, her life is much the same as it's always been. Married to a man who does not love her, Yi Joo has simply moved from one house without love into another. Even so, she is devastated when she learns that her husband is desperately in love with her younger sister. Willing to give just about anything to change her fate, Yi Joo might have taken action but a tragic accident cuts all her hopes for a better future short. Or does it? Waking from that fatal accident, Yi Joo finds herself transported back in time. Seeing this strange occurrence as a chance to change her fate and take revenge on her family, Yi Joo immediately gets to work. Teaming up with Seo Do Guk (Sung Hoon), the heir to a vast fortune, will Yi Joo find a way to make for herself the life she's always wanted?—Rakuten Viki