hannah, a 10-year-old girl who is disappointed with her family, meets 9-year-old tomi and 7-year-old tomi, whose parents have been working outside for a long time. the three little girls rely on each other and reorganize their small "home". in order to save each other's families, they decide to start an unknown journey. aaa。 yoon ka-eun, a korean female director who is good at depicting delicate stories from girls, is another excellent work after "our world". she uses her extremely loving insight to show the complex and subtle emotions between children and give adults a different inspiration.