Far away in the vast desert of the West, there is a lonely city.
Legend has it that in the ancient dragon-slaying battle, Feng Xiao, the only survivor of the Shuimai Dragon Clan, carried the relic of the spring god Jumang - the seeds of the sacred tree. She was wounded and ran away. Eventually, she was exhausted and fell asleep in the Western Desert.
The seeds of the sacred tree were nourished by the watery spiritual power of Feng Xiao, and gradually evolved into an oasis, which attracted the Qingwu tribe to settle here, and it was first called the "Secret Land of the Spiritual Tree".
However, over thousands of years, Fengxiao's spiritual power has gradually declined, and the sacred tree has gradually withered. The secret realm of the spiritual tree has to send the priest Yue Wu who protects the sacred tree to travel through the three realms in order to find the source of spiritual power that can sustain the life of the sacred tree.