A floating corpse floated on the Suzhou River. The deceased had a bronze medal engraved with the word "" stuffed in his mouth.
Inspector Shen Shubai of the French Concession Patrol Room was ordered to investigate the case, but found a chewed note in the deceased's stomach - it was a list of thirteen names, and the thirteenth one was himself.
After investigation, a secret organization that had been silenced for sixteen years emerged: the Moonlight Society.
On that full moon night in 1919, Huang Jinrong, the leader of the Green Gang, bloodbathed the Moonlight Society. Thirty-seven corpses were thrown into the Suzhou River. Sixteen years later, the survivors lived in seclusion in Shanghai with codenames such as "February", "March" and "April" - they wanted revenge.
But Shen Shubai soon discovered that things were far more complicated than revenge.
