Cheng Nianyi followed Li Size to visit Li Size's hometown Yinyang Town. The two encountered heresy about ghosts and gods in Yinyang Town. Behind each bizarre incident was the unpredictable and treacherous human heart. As the truth was revealed, Cheng Nianyi and Li Size discovered that Yinyang Town, which was shrouded in rumors and heresy about ghosts and gods, was hiding a bigger secret. After many obstacles, the two teamed up to catch the murderer and demolish the Ghost Mother Temple. As a result, the life in Yinyang Town returned to peace and tranquility.