A king who had a son to become a prince, but to one day discovered he needed to have a guard. But who knew he would fall in love with his protector? " Off! Save me!" Well, find out yourself P'

Off is always receiving some text messages. But the thing is, he doesn't know who's that person who likes to send him those sweet messages.

Marrying the love of your life is a dream come true or just wasting your life? "I thought you already let me in in your heart. I was happy because I thought you are falling for me. But I am so stupid to think you will fall for me when in the first place you just agreed to this marriage because of the position you want in your company. I can't handle the pain anymore, P'Off. Let's divorce. You can have the freedom you want" was the last thing Gun said. He's been trying his best to be a good husband to Off even if it's hurting him. He let him control his life to the point he was losing his self. When Off started to be soft with him he had a hope that maybe Off is falling for him but something happened that ruined everything

Off and Gun families are so close before then. Their grandfathers were super close when they were young. They treated each other like a brother but they thought 'what if they were a family? What does it feel?'. So one day, both grandfathers promise each other that someday when they have grandchildren they will marry each other for them to become a real, big family. And unfortunately Off and Gun were the only grandchildren of each family. Are Gun and Off agree with all of this thing? What are their reaction when they knew all of this?