Suffering from insomnia, disturbed loner Travis Bickle takes a job as a New York City cabbie, haunting the streets nightly, growing increasingly detached from reality as he dreams of cleaning up the filthy city.
An extended dream sequence presents a biblical allegory about the creation, downfall and rebirth of humanity, told through a series of surrealistic vignettes and musical numbers.
Cornélio, an aged man and famous baritone, marries the young Angelica, who plans with her ex-boyfriend Bruno, to kill the husband with contaminated oysters, but she ends up the one who gets sick.