You(Cha Sujung) is an 18 year-old girl who went to study in America at the age off 14. You had an older brother, Cha Hakyeon.  When you came back to Korea, you found out that you were living together with your best guy friends,  Seo Inguk and Lee Hongbin because their parents died when you were in America... But you had a trauma that haunted you for quite some time now...Your other best friend is Jung Eunji from Apink, Krystal from f(x), and Hoya from Infinite.One day, you get to meet vixx...some of them eventually fall for you. Your brother doesn't let you date. One day, he finds out that you were dating and was cheated on by Lee Jong Suk. But not only him, but there is also someone else who wants to be at your side. Will your brother approve of him?