Donghai, a bustling coastal city, is plagued by a perpetual shortage of rainfall and drinkable water. One fateful day, Lin Yunxiang- a passionate motorcycle fanatic- finds himself under attack by supernatural forces after a collision with the wealthy son of the city's water supplier. Unbeknownst to him, he possesses a mysterious ability dubbed "Nazha", that had yet to reveal itself. Beside seeking retribution against his assailant, Lin Yunxiang must also confront a greater plot lurking in the shadows.