The ordinary Qian Yun'er, a college student with a pair of crimson eyes, was rescued by the mysterious white-haired bodyguard Seven Whales when he was about to die. He was also entrusted with a shabby book by a little girl in the space of the dead. He ignorantly became a "card holder" and stepped into a cold and bloody world of the law of the dead - the dead card space. Here, resentment is power, obsession is the key, and the levels are strict (green card C level to black and red card SSS level). The souls of the dead are turned into cards, becoming the chips and shackles of the card holder.
He was forced to participate in life-threatening "bets": struggling to survive in a dance hall where a blind girl was stained with blood, witnessing the dissipation of hatred of young Tian Jinghao, and facing the accomplices of the murderer Shi Qiuqiu in a space like a slaughterhouse. The old book is the key to hell, the Seven Whales are the silent guardians and interpreters of rules, and the identity of Teacher Su Kelu as a black undercover agent under the gentle mask makes the real world full of dangers.
Qian Yun'er is ups and downs in the struggle of revenge and protection. The power of the Death Card is seductive and deadly. Every time a space is opened, it disturbs the taboo existence in the world of the dead. When the shadow of the "crazy ghost"—the being with puppet limbs, red thunderbolt tattoos, and a voice that even the souls of the dead fear to whisper—loomed, Qian Yun'er understood that there was no winner in this gamble. He could only risk his soul in the abyss of killing and despair to find the vague truth, or... The end of eternal imprisonment.
