The Undercover Is Back! the Boss Is Actually the Mastermind Behind the Scenes

When the undercover agent returned, he thought he could get rid of the darkness, but unexpectedly his immediate boss was actually the mastermind behind the scenes! The doubts of his former comrades and the fatal trap of the new mission, he is looking for the truth in lies and guarding justice on the tip of the knife. Who is the real hunter in this infernal battle?