| Director | Ingmar Bergman |
|---|
In late 1923 Berlin, Abel Rosenberg, an unemployed alcoholic and former trapeze artist, struggles to cope with the hardships of post-war Germany. After discovering his brother Max's suicide, Abel is offered money by his old boss to come back to the circus. However, he declines the offer, feeling that he won't be as good without his brother. Abel meets Max's wife, Manuela, to break the news of his death. Unable to provide a clear reason for Max's suicide, Abel only recalls a sentence from Max's note mentioning "poisoning."
Seeking solace in alcohol, Abel goes on a drinking binge and spends the night at Manuela's house. They discuss Abel's future career prospects, but when Manuela leaves for work, Abel steals from her to buy more alcohol. Later, Abel is taken by the police to identify several bodies, all of which were found near his home. Suspicion falls on Abel, and he attempts to escape but is recaptured.
Manuela visits Abel in the hospital, revealing that all her money is gone. Abel is released due to lack of evidence and returns home with Manuela. However, they face eviction when it is discovered they are not married. Manuela confesses that she is a prostitute, having concocted an office job to hide her shame. As tensions rise in November with the threat of armed confrontations between extremist parties, Abel and Manuela live in fear on the outskirts of Berlin.
One morning, Abel secretly follows Manuela and discovers she has been going to church. She confides in a priest, expressing guilt over her husband's death and the fear consuming their lives. Abel later learns that Manuela secured their apartment by providing sexual favors to the owner of the brothel where she works. Initially disgusted, Abel eventually returns to Manuela and they share a passionate kiss. However, their time together is cut short when soldiers overrun the brothel, killing the owner.
Abel finds a job as a file clerk in a hospital, while Manuela works at the clinic. They live in an apartment surrounded by abandoned buildings. One night, Abel discovers files detailing inhumane experiments conducted on patients at the hospital. Overwhelmed by fear, Abel withdraws from intimacy, and Manuela experiences extreme mood swings. After a drunken incident and a sexual encounter with a prostitute, Abel returns home to find Manuela dead and cameras scattered in the apartment.
Fleeing the scene, Abel ends up in an abandoned industrial building and fights off an unknown attacker in an elevator, decapitating him. Returning to the hospital, Abel confronts the doctor about the experiments. The doctor claims the subjects were volunteers driven by desperation. Abel is shown footage of Max injecting himself with a serum that ultimately led to his suicide. The doctor justifies the experiments, stating they will benefit mankind. As the police arrive, the doctor commits suicide with cyanide.
Abel is placed in a psychiatric ward to recover. The chief of police informs him that the circus has offered his old job, and he is forced to accept. It is revealed that Abel escapes from police custody on the way to the train station and disappears. The voice-over suggests that Abel evades capture and is never seen again.