Ki-joon, who lived alone with his younger brother Sang-woo, is worried about Hye-ran, who was the mistress of his father who died in an accident not long ago. Hye-ran had no place to go since ...

Ji-eun decides to become a tutor for Sang-woo's son, Sang-woo, in order to make sure he has a rich boyfriend. When tutoring begins, Sang-woo, who was kicked by her older sister Hye-ran, is ...