She would have to marry the son of another organization?! Yang Hye-jin had completely cut ties with her family right after she entered college, in pursuit of peaceful a daily life. It has been nine years since she left her violent father and her ignorant brother, who resembled him. However, her family suddenly appears and unilaterally announces her marriage with an unwanted partner, Moo Kang. Can Hye-jin and Moo Kang swear their entire lives in this marriage, which consists of a contract between organizations, and where death is the only path should they do not accept it?