A girl falls into the valley from the cliff where she collects flowers. She appears in the dream of a young boy named Genniao. Genniao flies into the sky in search of his dream. The author describes wonderful scenes such as deserts, grasslands, mountains and valleys, villages, and small towns. The lad grows up between the reality and the fantasy, and is determined to make the dream as a horse to ride him through adolescence. He savors the taste of happiness in the midst of pain, and experiences trances, confusion, hesitation, consciousness, and eagerness, taking his courage to carry on.