The drama is about a professional golfer named Oh Wan Soo who gets married to a rich chaebol (business conglomerate heir). However, her wicked mother-in-law wants Wan Soo dead out of greed. The mother-in-law hires a killer to assassinate Wan Soo, but the attempts always fail because Wan Soo has a charismatic and handsome ex-police bodyguard named So Do-Yoon (played by the actor Rain).
The drama features very good martial arts and action sequences showcasing Do-Yoon's fighting skills, with the director using advanced technology like drones in the assassination attempts. There is a slow-burning romantic chemistry between Wan Soo and Do-Yoon that you find very compelling.
I have watched 6 episodes so far and I am really enjoying the drama, eagerly anticipating seeing more episodes and how the story will unfold, especially the ending.