Namjoon, descendant from a wealthy family, has been homeschooled since the very beginning, making him not very social with people. Because of this, his parents begin to worry and wonder if he will ever be able to take over their company.
They soon decide that the best choice to help him is to send him to public school, where he can face different situations and learn to socialize better- just what they need.
They don't want to sent him off alone, so they meet a young and trustworthy girl, Y/N, and ask her to become his 'bodyguard'. She accepts their request, but is she really prepared for what is coming her way?