Fisherman Shen Yanchuan by the Lanjiang River rescues Xiaoman, and the Shen family henceforth gains an extra share of warmth. Xiaoman is kind and sensible, able to understand the voices of fish, water, grass, and trees, often reminding family members to avoid danger and seek sources. The Shen family relies on hardworking hands to discover the Crescent Pool living spring, clear the underground dark river, send fresh fish into the county town, and establish a canned food factory, leading fellow villagers to jointly increase income. Facing setbacks, they uphold honesty, mutual aid, and struggle, without complaining or giving up. In the end, Xiaoman officially settles in the Shen family, fish leap and people rejoice by the Crescent Pool, the whole village's days grow increasingly prosperous, and family affection and hope grow together.