Jung Soojung reset her life the day senior high began. Kim Myungsoo reset his life the day his mother died. Both are on the run from their pasts, but too bad, neither of the two realize that running is never the answer.
Eunjung,Sooyoung and Seohyun are bestfriends and Lee Minho, Nichkhun and Kim Soohyun are bestfriends. Nichkhun is Eunjung's bestfriend. He has always liked Eunjung but not until he met Sooyoung, Eunjung's bestfriend. Soohyun meets Eunjung and pretends to not like her, but deep inside he has feelings for her. Seohyun and Minho hated each other but then started falling for each other.