When the "Night Owl" rebels and the code book falls into the enemy's hands, Shanghai's underground network is in danger.
Chen Mo, who had just "sacrificed", opened his eyes in the interrogation room.
His brain began to overclock, deducing the only way out from the traces of blood, the echo of military boots, and the nuances of ink...
This is a story that uses probability and logic to dance on the edge of a knife.
