La storia inizia con il sogno di Ha-Young, studentessa delle superiori, nel quale è una principessa in attesa del suo principe. Proprio quel giorno, uno di quei giorni in cui va tutto storto, incontra Hyung-Joon, uno studente universitario, alla guida della sua costosa Lexus430. La macchina va a sbattere in un muro e si graffia il paraurti. Ha-Young scappa dalla scena lasciandosi alle spalle un furioso Hyung-Joon. Ma Hyung-Joon non si da per vinto e decide di far pagare a lei la riparazione. Ha-Young non ha soldi, perciò i due raggiungono un accordo: Ha-Young sarà la schiava di Hyung-Joon per 100 giorni. Gli pulirà la casa e la macchina, porterà le sue borse delle shopping, etc... un vero incubo, finche Ha-Young non scoprirà che Hyung-Joon ha mentito sul prezzo della riparazione, e da quel momento inizierà la sua vendetta.

Yang Jing Hua is a young man heir to a famous family of exorcists, but now he is poor and left to himself since the death of his parents. This young comic book owner tries to survive day by day, but bad luck is still on him. One night he meets a rich and handsome exorcist named Duanmu Xi while he was going to eliminate an existing spirit. Yang Jing Hua runs away, but the next time Duanmu Xi appeared right in front of him, Yang Jing Hua was already dead because of getting hit by a heavyweight. Yang Jing Hua makes a contract with Duanmu Xi and his new life begins.

Chen Yu Han is the daughter of Chen group founder. She has a one night stand and gets pregnant with Ye Chen Xi, her father's friend's son and the president of Ye Corporation while both were drunk an are forced to get married. Will this short gun contract marriage survive the schemes of Yi Xuan Xuan, who is in love with Ye Chen Xi and Jin Yang, Yu Han's ex-bf who desperately wants her back?