Burning Undercurrent

A street gangster is ordered to deliver life-or-death information in a critical situation. By chance, he becomes a member of an intelligence team. The team is ill-fated and has lost contact with its superiors for many years. The sleeper agent completes the task alone and devises a clever plan to eliminate the spy leader. He accidentally learns of the enemy's shocking conspiracy. Military agents have infiltrated our intelligence center. How can this disconnected team pass on this intelligence?