In 1937, Nanjing fell. Amid mountains of corpses and rivers of blood, Su Chengxiao, a Communist Party member skilled in martial arts, escaped the Nanjing Massacre. To avenge his country and his family, he assumed the name “Cheng Xiao” and infiltrated the Japanese army's Xuzhou headquarters. He disguised himself as a ruthless, greedy traitor, even staining his hands with the blood of his own countrymen, all to win the Japanese army's trust. By day, this “lone wolf” embedded deep in enemy territory was a fearsome Japanese lackey. By night, cloaked in black, he moved like a specter across rooftops, using his lightning-fast concealed weapon, “Cold Star,” and formidable blade skills to kill senior Japanese officers, leaving the enemy camp terrified.
For ten years, he operated undercover, navigating between General Yamamoto's favor and the relentless pursuit of intelligence agent Sato. He narrowly avoided exposure time and again, using his wits to escape danger and gradually dismantle the Japanese army's plans. In the night-shrouded streets of Xuzhou, the black-cloaked figure was the invaders' nightmare and a hidden light in the hearts of the underground party and the people. He and Lin Moqing, an underground party intelligence officer, went from mutual suspicion to understanding. Their feelings blossomed amid blood and fire, but their identities forced them to bury their love. He also went from bitter enemy to comrade-in-arms with Wang Laohu, a Kuomintang agent, embodying the chivalrous spirit of putting the nation first.
When a traitor's betrayal ignites the fuse of his undercover mission, Su Chengxiao's identity is exposed, shocking both sides. He infiltrates an underground labyrinth beneath the ancient city and engages the Japanese in a final battle to the death. His black cloak stained with blood, his chivalrous spirit unbroken, he uses the trust earned through ten years of patience as a blade, ultimately shattering the Japanese plot deep within the tunnels. But the story does not end there. From the flames of war in Xuzhou to the galaxies of interstellar space, the spirit of the “Black-Cloaked Lone Wolf” crosses time and space, becoming the spirit of the universe
