On the eve of the demolition of the Kowloon Walled City, Ye Han, a waiter at a tea restaurant, was charged with the lost martial arts "Seven Steps to Startled Cicada". After his master was killed, he was forced to get involved in the disputes between the rivers and lakes. Su Wan, a singer on Temple Street, has hidden secret skills of the Tang clan, and her singing voice hides a blood feud. When the Dragon-Elephant Prajna Palm of the Dongxing Gang meets the evil thunder pattern sword technique, when the rainy night under the neon lights becomes the stage for the ultimate showdown - the end of an era and the end of a legend in the world. The light of the sword blooms in the rain, and the friendship is tempered in the blood. The last rain in Kowloon Walled City could not wash away the grievances, but it witnessed a man transforming from a barbecued pork cutter to a real knife master.
