"You're unhappy with your life and I'm unhappy with my life. We both want to switch lives with someone, so why don't we switch places?" SinB couldn't believe how excited she sounded, but who couldn't not be excited when their prays come true. Stuff like this only happens once in a lifetime. Or maybe only in movies.  SinB, a member of popular girl group in nation across with her doppelganger, Hwang Eun Bi who born in wealty family and wish for freedom. They make sweet lies in their liv