 Minako is still at school. Whe she was a little girl, her mother ran off with another man. Now Minako lives with her father, who has remarried, and her younger half-sister, Yu, who dreams of one day becoming a ballet dancer. on a whim, Minako takes Yu to a remote house by the sea that belonged to her grandparents, who have recently died. The more time Minako spends at the hideaway, playing and looking after her little half-sister, the more she becomes aware of her own situation. As she plays, her mind drifts back to memories of her own, happy childhood. Although now at an age where she feels more distanced from her father, the resentment she bears her mother for having deserted her and her father, remains unbroken.