《黑道中女8》是由古川いおり主演的「黑道女人」系列的第八部作品。故事开始时，依田塗装公司的社长依田被发现死亡。随着这一事件的发生，毒品交易被警方揭露。与此同时，从浦虎组织中找到了袭击依田的凶器，哲也也被逮捕。对此感到可疑的真希开始了自己的独立调查.....

在《黑道中女8》中，真希为了揭开真相展开了一场个人的调查行动。她对依田的死感到非常怀疑，并决定自己去追查真相。通过调查和搜集线索，真希逐渐发现了背后隐藏的复杂关系和阴谋。

随着调查的深入，真希发现凶器的来源与浦虎组织有关。她开始怀疑是否有人故意将罪责推给了哲也，并试图寻找背后的幕后黑手。真希的独立行动引起了警方和黑帮组织的注意，她不得不面对种种阻碍和危险。

"Underworld 8" is the eighth work of the "Underworld Women" series starring Furukawa Iori. At the beginning of the story, Yida, the president of Yida Painting Company, was found dead. With this incident, the drug deal was exposed by the police. At the same time, the weapon that attacked Yitian was found from the Puhu organization, and Tetsuya was also arrested. Suspicious of this, Maki starts her own independent investigation..

In "The Girl in the Underworld 8", Maki launches a personal investigation to uncover the truth. She was very suspicious of Yi Tian's death and decided to find out the truth by herself. By investigating and collecting clues, Maki gradually discovered the complicated relationships and conspiracies hidden behind her.

As the investigation deepened, Maki discovered that the source of the murder weapon was related to the Puhu organization. She began to wonder if someone deliberately put the blame on Tetsuya, and tried to find out who was behind it. Maki's independent actions attracted the attention of the police and gang organizations, and she had to face various obstacles and dangers.