The Japanese secret troops were robbing tombs and opening mausoleums to search for Chinese national treasures. The commander of the troops, Yamamoto Ikki, was responsible for studying the history of the Qing Dynasty. He learned the specific acupuncture points of the imperial mausoleums, ruled out the possibility of moving the tombs, and looked for dragon veins. However, none of the teams sent out came back alive, so they thought of asking the locals to find out the situation. The mausoleum keepers, led by Wu Dahu, felt that something was wrong when they learned about this, and hoped to stop Yamamoto Ikki through the trick of "burning incense and asking about the corpse", but they were exposed by the traitor Shen Jun. So Wu Dahu took advantage of the situation and prepared to take the Japanese to the tomb to eliminate them. After going down to the tomb, he found that Shen Jun was also a mausoleum keeper. The mausoleum keeper team buried the Japanese conspiracy in the tomb by cooperating with the tomb chamber mechanism.