In search of a legendary lost ancient city, a group of archaeological teams stumbled into a tomb at the bottom of a lake. A huge coffin was placed in the center of the tomb. A few bold archaeological team members opened the coffin, and what they saw was a beautiful woman in white plain clothes. Suddenly, the water level began to rise, and the archaeological team had to leave. After going through many dangers, they returned to the ground. When the team leader was counting the number of people, he found that the youngest girl in the team was missing. There was a moment of commotion and the crowd split into two groups. One group, headed by the team leader, believed that the ancient tombs at the bottom of the lake were unknown and asked to leave to seek outside help. The other group, headed by Lu Xun, insisted on finding the missing girl and would not give up any team member. The two groups of archaeological team members broke up unhappy and went their separate ways. A team led by Lu Xun returned to the tomb, only to find that the woman in plain clothes originally lying in the coffin had become the missing girl! From a distance, a woman's sad voice came. . .