Chen, he has been your bodyguard since you were 7 years old and he also works at your grandfather's company as a manager because he has become your grandfather's trusted person, and secretly he has a secret mission, namely destroying your family to avenge his brother's death.

Until one day you just graduated from school and want to work but your grandfather doesn't allow it, your grandfather tells you to marry someone your grandfather chooses, you think of a way to cancel it. In the afternoon you were walking home accompanied by your personal bodyguard, Chen. Chen casually walked while taking out a cigarette from his pocket and wanted to light it.

"Chen, marry me," your sudden words made Chen a little surprised, and Chen put his cigarette back in his pocket and looked at you.

"What?"