Kim Hyojin (you) and Song Ha Neul share a deep bond of friendship ever since Haneul was orphaned and was taken under the custody of Hyojin's parents, Junhyun and Juyeon. Hyojin grows up responsible and compassionate while Haneul, fueled by ambition and envy, secretly detests Hyojin and always feels inferior next to her. Many boys are attracted to Hyojin but she falls in love with Luhan. It doesn't take long before Hyojin becomes pregnant and gives up on her dreams of becoming a nurse in order t