SANA is a rich man's daughter, and she's finally starting university. NAYEON, a year ahead of Sana and in the same university, but Nayeon is struggling with her finances to keep her in school. Sana's dad hired Nayeon as Sana's bodyguard after seeing Nayeon fight, and he's paying her a lot.

What would happen when they finally meet, would Sana love Nayeon being around her all the time? Or would she dread every moment.