Four years clean, video store manager Tracy (Cate Blanchett) lives quietly, avoiding anything that might trigger a heroin relapse. Her ex-boyfriend Jonny (Dustin Nguyen) returns, claiming he is now a drug-free banker, and the two begin seeing each other again. Tracy looks after Lionel (Hugo Weaving), the man who introduced her to the drug. But, Lionel is thrown into a panic when his dealer, Brad (Sam Neill), suddenly retires. Lionel begs Tracy to help him score, testing her shaky sobriety.