Ha-Na is a 12-year-old girl. She worries about her parents, who argue every day. One day, during summer vacation, Ha-Na meets sisters Yoo-Mi and Yoo-Jin. Yoo-Mi and Yoo-Jin do not like the fact that their family moves frequently. The three girls become friends and talk about their worries. To protect their own home, they are willing to take risks.
She is a South Korean film director and script writer born in 1982. She graduated from History Department at Sogang University and continued her graduate studies at the School of Film, TV & Multimedia at Korea National University of Arts. Her films explore the stories of young children and youth. The first work that she began to make a mark is "Guest" (2011), which won the grand prix at the 34th Clermont - Ferrand International Short Film Festival in 2012. Her debut feature film, "The world of us" (2016), premiered at Berlinale and won various awards worldwide.