In the mysterious borderlands of Yunnan lies a spine-chilling valley teeming with insects. Two thousand years ago, King Xian of the ancient Dian Kingdom led his people into seclusion here. A master of feng shui, he was also cruel by nature. To build his royal tomb, he used poisonous insects to turn the people into skin puppets. His sinister sorcery was enough to make anyone shudder. And deep inside King Xian’s tomb lies the legendary Muchen Orb, a phoenix gallbladder formed from the Earth Mother herself, said to hold the hope of breaking a certain family’s curse of short lives.
On Snake Coiling Mountain, a true god guards a mysterious crown. To rid the world of demons, a young man resolutely enters the mountain, while his beloved sees him off in tears. But then comes a shocking turn of events: she changes her mind and follows him. What unknown dangers will they face in the mountains?
At an inn not far from King Xian’s tomb, a wondrous sight appears each night: fireflies. They glow, but burst into flames at a touch, following their king in life and death.
A courageous expedition team ventures deep into this cursed, mysterious valley of insects in search of the truth and its treasures. Can they solve its many mysteries and find a way to survive amid the shadow of King Xian’s terror, the eerie legends of Snake Coiling Mountain, and the strange world of the fireflies?