Qin Xiao, an abandoned son from a poor family, had no intention of contracting with the remnant soul of an ancient demon ape. He rebelled against his fate and crushed the genius of the family with his useless body. Saint Bai Yao formed an alliance with him to save her life, but she didn't know that she was already the key to the demon ape's recovery. The law enforcement elder Liu Wuchen secretly planned, Xiao Jin, the prodigy of the family, was murdering every step of the way, and the whispers of the sick girl Yun Jin every night were writing the prelude to destruction. When the demon ape wakes up, the world will return to the blood prison - and Qin Xiao must make a choice between becoming a demon and saving the world.