In I Went Undercover in the Demon Kingdom, Bai Ling becomes part of a dangerous experiment. A Gu worm is used on her to disrupt the minds of demons.
The experiment fails.
Zhao Xin refuses to abandon the plan and locks her away. He prepares a backup strategy as tensions rise. At the same time, Roland faces humiliation during transport. Other demons mock him for acting like a human.
He fights back with words. He exposes Red Bull’s identity and reveals a harsh truth—they are both trapped by humanity.
As conflict grows between humans and demons, hidden motives and failed experiments begin to surface. What starts as an undercover mission turns into a deeper struggle neither side can control.
