After going bankrupt, young entrepreneur Lin Chen returns to his hometown, only to be kicked into a foul-smelling mud pond by his romantic rival, Wang Jiao. Unexpectedly, he awakens the Dragon Saliva Water-Purifying Pearl, a divine treasure capable of purifying water and cultivating extraordinary aquatic products. Lin Chen revitalizes the abandoned muddy pond and Qinglong Lake, repeatedly foils the destructive schemes of Qian Baiyi, Liu Qiang, and others, cultivates rare aquatic species, and builds an ecological industry. Together with Su Qingxue, he leads the entire village to prosperity. In the end, all the villains are brought to justice, and the pristine waters and green mountains are protected.