Anna Kaneshiro, a Hong Kong mafia member, arrives in Japan for a drug deal but becomes entangled in an unexpected incident. At the exchange site, she is attacked by the Oinumi-gumi, a designated yakuza syndicate, and taken captive by the boss. Realizing she has fallen into a trap, Anna gradually uncovers the truth behind the conspiracy. A tense, gripping narrative unfolds as she fights to survive.