The Filth Hidden Under the Prosperous Age

Retired Zhong Muchun was accidentally involved in a murder case while recuperating, and reunited with his old classmates during the murder case. Faced with repeated questioning from his old classmates, should Zhong Muyun confess or continue to conceal it? Can the "net" covering Linshi be uncovered? Do they and their group have the courage to face the filth directly?