What Happens If You Fall In Love With an Idiot

(past) Sung tae hee is sent to America for education when she is in her second year of middle school, during her 6 year stay she falls in love with this guy and they go out for a couple of years but eventually they break up. Sad and kind of depressed she starts her last week of school, (present) she gets a call from her aunt telling Taehee to return to Korea because her parents were in an accident. since her aunt is busy taking care of tae hee's parents, she has to live with her aunts son. And everything goes crazy when she finds out who he really is, what he does and the people he lives with. will there be love, or will taehee run away?

(Tae Hee and her boyfriend were together for years but they broke off right before their senior year)