Wu Xie and Wang Pang Zi start exploring Yang Daguang's family tomb, only to find hidden murals and another tomb filled with bronze bells and a thunder collecting device. While exploring the tomb Zhang Qi Ling joins them, completing the Iron Triangle once again. They are followed by Tang Tang, send by Wu Er Bai to keep an eye on his nephew, when suddenly a thunderstorm hits and turns the tomb into a death trap.