As Professor Han Sooha, Han Jeongseo's father, marries Actress Tae Mira, she starts to live with Han Yuri and Han Taehwa, her new siblings. Yuri and her mother harass Jeongseo in every way out of jealousy. Jeongseo waits for the day to go abroad to go to school with Cha Songjoo who's the one she's in love with and relies on.