In 2000, a murder and dismemberment took place in Hegang, Heilongjiang. A witness fled to Guangzhou.
In 2002, Yang Liu, Wu Sisi, Gao Ling, and Xiao Wei met while working in Guangzhou and became friends. They joined forces to investigate the case of Yang Liu’s roommate Lan Lan, who had jumped to her death, but found nothing unusual.
Before long, however, Xiao Wei also jumped to her death...
In 2023, just as everyone believed the past had long since been buried, a sudden arrival shattered the calm surface of the lake.
A raging fire burned away the hearts of everyone involved...
