Muraki, a hard-boiled Yakuza gangster, has been released from prison after serving a sentence for murdering Kijima, a rival gang member. At an illegal gambling parlor, he bets a large sum of money and loses to Saeko, a young upper-class woman who drives fast cars. Later that night, he reconnects with Shinko Furuta, his former lover, at a clock shop whose abusive brother has mortgaged the shop. The next day, at a horse race, Muraki learns that the Yazuka gang has made peace with the Funada gang to counter the Imai gang from Osaka. A week later, Saeko asks Muraki to take her somewhere she can play for higher stakes.
On her way home, a co-worker from her office proposes marriage to Shinko, but she refuses. Shinko recounts what occurred, in which Muraki tells her to marry the co-worker, but she refuses because she loves Muraki. Muraki takes Saeko to a high-stakes gambling den at Aikawa’s inn in Tsunamachi, Tokyo, where she wins another large sum of money. Days later, Muraki learns about Yoh, a heroin addict who fled Hong Kong after killing two people. Muraki confesses he hates drug addicts, seeing them as cowards. However, Saeko is attracted to Yoh because she has an interest in taking illegal drugs.
Meanwhile, the Yazuka and Funada gang leaders discuss sending Muraki on an errand to kill the Imai gang leader. After another night of high-stakes gambling, Muraki walks down a street where he is ambushed by a knife-wielding assailant. Days pass, in which Muraki goes without seeing Saeko. He later tells Reiji about a nightmare he recently had, in which Yoh gives Saeko a drug injection. He wakes up later, and learns that Tamaki, a member of the Funada gang, has been killed by the Imai gang. Reiji offers to avenge Tamaki’s death, but the Funada boss turns him down. Muraki then volunteers to kill Imai. Back at his apartment, Muraki meets with Shinko again encouraging her to marry and leave him be. Before he leaves with Reiji, Muraki meets again with Saeko, who tells him she experimented with heroin. Angered, Muraki takes her to a classical music café where Imai happens to be. At the café, he stabs Imai to death right in front of her.
Two years later, inside a prison, Muraki learns that Saeko has been killed by Yoh. He reflects that while Saeko is dead, he still longs for her. Watch Pale Flower Online Full Movie to experience the intense drama and complex relationships portrayed in this captivating film.