The laughter in the world is spreading, and the storm is rising. Su Xiaohu, a young boy, unexpectedly got a mysterious gourd and an invincible sword book, but he had no ambition to dominate. Instead, he smiled at life and gathered his brothers and close friends to fight against the current. Along the way, they get to know the talented girl Bai Zhiyun of the Medical Valley, the fat boy Hanhan, the famous thief Hua Manlou, the killer Hongye and the spiritual pet Iron Donkey. Together they encounter dangerous situations such as power murder and martial arts hegemony, and resolve the crisis with laughter. Three people and six friends work together to break the conspiracy and find out the mastermind behind the scenes. They all have their own concerns and finally treat each other with sincerity, gaining family, friendship and love amidst the lights of swords and shadows. The story progresses with lightness and humor, and is full of dangers but endless fun. It ends with looking at the world with a smile and not asking about the future.