The leader of the tomb-robbing gang, under the order of the cultural relic thief Heizi (Xu Huanshan), comes to the Shenmu Yangjiacheng with the treasure map of the Yang Family Sword, which has been buried for thousands of years, to steal the sword. Unexpectedly, when he is about to succeed, he is killed by the cultural relic dealer Xiao Xiaotian (Dong Yang) halfway. The sword falls into the hands of Anzi (Ye Peng) by mistake. Several groups of people gather together to "steal the sword in 72 hours". Who will win the sword? The battle of wits and courage is about to begin...