Kim is a normal girl of 19 years of age. She's from San Diego, but she's recently moved to Seoul. She's working on a coffee shop and couldn't ask for more.
Her life turns upside down with the arrival of a new client, Wonshik. He's 21, and crushes on her the first time he sees her. Jia, her best friend, senses something weird about this guy, but shakes it off her mind and goes on with her life.
But for some reason, Wonshik insists on being friends with Kim.
What she doesn't know is that this guy isn't all he claims to be.
Kim Mina is just an ordinary girl. Having an ordinary life as a 18 year old girl . Not many of her friends know that she has an idol brother. But one day, Mina bumped into a boy in school but what she doesn't know is that he actually her new neighbour. Will that one boy make Mina's life change forever or will it go downhill and make her life a living hell?