Three thousand years ago in northern China, in order to resist the invasion of foreign enemies, the emperor borrowed the dragon's ball and promised to return it to the dragon after victory. The emperor died in battle, and the dragon ball was nowhere to be found. In the twinkling of an eye, a Sino-Australian joint archaeological team excavated the emperor's tomb by virtue of the tomb map handed down from that year. At this time, boy Josh and girl Lin Jin accidentally embarked on a mysterious journey to find the Dragon Ball. The claws of the grave robbers are right behind them.