Minhee lost her parents in a car accident at the age of 12. After the accident, Minhee is raised by the family of her male friend, Pilho, but suffers torment and discrimination. It's almost as if at this point, Pilho is like her real family. However, for Pilho, Minhee is not family. Little by little, he starts to see her as more than just a friend, but what happens when the new next door neighbor, an older guy, catches Minhee's eye? What if this guy, Kang Muyeol, is actually the new teacher at Minhee's school?!