Jingxigui and Linglichong, two little demons from Lotus Cave, are ordered to take magical treasures and capture Tang Seng, but they are tricked by Sun Wukong and lose the Purple-Gold Red Gourd. Their cave is destroyed, leaving them homeless and on the run. Along the way, they witness the dangers of the demon world and receive kind help from an ordinary human, Auntie Wang. They settle on Flat-Top Mountain and establish a lost-and-found agency to make a living. When their former colleagues arrive to steal their business, the two defeat them with their own abilities. Later, they return the heavenly treasures and, for choosing kindness and helping others, are appointed by the Jade Emperor as the Earth Gods of Flat-Top Mountain. The two little demons who once cared only about staying alive ultimately become protectors of the local people and enjoy a peaceful life.