Heaven

A poet named Dan and an art student named Candy fall passionately in love, as Candy gravitates to his bohemian lifestyle and love of heroin.

Frequently seeking drug money, they borrow from Candy's parents or eccentric university professor Casper, then turn to theft. When Candy sells her grandmother's ring, she has sex with a pawn shop owner for $50.

Earth

Dan and Candy marry and confront the realities of addiction and family life. Dan purchases the drugs while Candy prostitutes. While considering having sex with men in a park bathroom for money, Dan steals a credit card and scams the owner for his PIN, taking $7000.

Candy becomes pregnant, and despite a few days of tortuously "going clean", their baby is delivered stillborn at 23 weeks. They return to heroin, but stop again, enduring agonizing withdrawal symptoms in the process.

Despite poor living conditions, constant struggles for money, and frequent disputes, the pair remain in love.

Hell

Dan and Candy move to the country to "try methadone" as a way to ease into a more normal life and eventually quit drugs altogether. After a disastrous attempt to have Candy's parents over for Sunday lunch, Candy screams at her mother about how she is the cause for Candy to "never have been able to unclench [her] fists".

After Dan returns home one day from working as a bricklayer, he finds Candy smoking marijuana with a new man and watches as she later leaves to have sex with him. When she returns, she screams at Dan about how much she hates him and wants him to leave. He returns later to find the walls of every room of the house are covered with poems about Dan and Candy that she has written in smeared makeup.

Distressed, Dan seeks Casper again and takes heroin with him. Dan is informed the next morning of Candy's hospitalization back in Sydney, where he finds her in the aftermath of a nervous breakdown. Dan returns to Casper's only to find him dead of a heroin overdose. This forces Dan to reconsider his life.

While Candy recovers in a treatment clinic, Dan gets clean and finds a job washing dishes at a restaurant while still missing Candy. But when Candy finishes treatment and comes to the restaurant to finish off where they started, he cries and says "There's no going back. If you're given a reprieve, I think it's good to remember just how thin it is." She subsequently leaves.