The magician Ma Lei (Ma Wenzhong) wanted to disrupt the operation of the time wheel and destroy the earth, but was obstructed by a mysterious time guard at the critical moment. Although Ma Lei's conspiracy did not succeed for the time being, the earth is still running under the shadow of crisis. In order to protect world peace, Silly Girl (Shu Chang) found the boy Lu Dongyu (Cao Jun) and brought him back to the modern world. Only he could stop Ma Lei's conspiracy. Coincidentally, the mother that Lu Dongyu has been looking for is the mysterious time guard. Who knows that Ma Lei knows Silly Girl's plan and secretly follows her, wanting to find the time guard and kill him with the hands of the two of them. At the same time, Lu Dongyu's father Lu Xiaoqian (Li Bin) is also involved in this dispute. He must restore Silly Girl's destroyed system within the time limit to truly stop Ma Lei's conspiracy.