Wanjiazhuang suffered from severe drought for consecutive years, with cracked fields and difficult conditions for the common people. The local powerful figures monopolized the only remaining water source, taking the opportunity to extort and oppress their neighbors. The villager Lao Quan, possessing a kind heart, exhausted his savings and farmland to rescue a spiritual carp in danger inside a mud pit. Lao Quan's sincerity awakened the spiritual carp, which was originally a rain god undergoing a tribulation, and it produced immortal water to relieve the fellow villagers. The powerful figures repeatedly seized the immortal water and harmed everyone, and their evil deeds brought retribution, with the immortal water turning into mud once outside the valley. The powerful figures met a miserable end, the rain god passed the tribulation and brought down rain, and the village returned to vitality.