tomboyish lisa transferred to a new school, new city after the remarriage of her mother. turns out, she didn't know that the school she's transferring in was an all-girls and a strict one. her first day, meeting the scary and strict student council president just got her frightened, she still didn't know that this girl is her stepsister. but her mom told her at home, it was all of a sudden. what does this stern student council president jennie think of her stepsister?