Based on the story of Chingiz Aitmatov "The White Steamer". In a forest cordon, lost high in the mountains, an old man and an old woman and his daughter live with their family - a husband and a seven-year-old son named Shambala, which means "boy-candle" or "boy who radiates light." Shambhala faithfully believes in the ancient myth of the Mother Deer, who saved the last baby of their kind, Bugu, from enemies and fed him with her milk. And although over time people exterminated the deer, the boy believes that someday the deer will still return to their land.

The hero hurries to his native village to celebrate the birth of his long-awaited grandson, but on the way he meets border guards. For the capture of the offender, they are entitled to a bonus, and therefore they do not want to let the old man go to his loved ones.