A middle-schooler, Kiho lives alone after her father committed suicide and her mother who has been absorbed in a cult religion disappeared. One day, when Kiho goes to school and sees a sign “School is closed” she decides to find an eternal rest. However, when she goes up to the roof and runs into a strange woman who calls herself as “angel”. The day they spend together might be her last day, but it could be a new door that leads to another day. It makes us pay more attention to how delicate and precious our daily lives are, and discover the true meaning of life.