On the night before the 1975 Soum Naadam, Balgaa, a young man, rides a dangerous racehorse to protect his beloved daughter, Tsevelmaa, and is injured and remains ill for life. Twenty years later, the young man is raising Tsoomoo alone, but he is in danger of being separated from his son. Amidst past secrets, old friendships, and conflicts of interest, Balgaa fights to keep his son. Finally, the truth is revealed, and the moment comes when the son's fate is decided between the heart of a mother and the great love of a father. There is light within every person.