Determined to spend the rest of his life with Han Da-jung to pay her for saving his life, Bok-ku one day falls in love with Cha Eun-suk, a top actress and the ex-girlfriend of his older brother. Bok-ku becomes her bodyguard to avenge his brother, who falls off a building while watching Eun-suk announce her engagement with another guy on TV and ends up in a vegetative state. But, ironically, Bok-ku ends up falling in love with Eun-suk against his wish.

Eun-suk is engaged — against her will — with Kim Jun-sung, the scion of a family-owned conglomerate that she advertises. Jun-sung aspires to become a politician someday, but he is also the future successor of the Hankuk Group, a company with an impeccable reputation. Eun-suk and Jun-sung are forced to get engaged after they are caught being together one day.