Aira, a one-year-old baby, loses her entire family in a tragic accident while they were on a holiday trip. The happiness that once surrounded her life quickly turns into darkness and loneliness. After the accident, Aira is taken in by a cold and distant foster family, far from the love and warmth she once knew. This first episode tells the story of the beginning of Aira’s new life, filled with mystery, sadness, and a deep sense of loss.