A group of people gather in the California desert to watch a "film" set in the late 1990s featuring a sentient, homicidal car tire named Robert. The assembled crowd of onlookers watch as Robert becomes obsessed with a beautiful and mysterious woman and goes on a rampage through a desert town.
It tells the story of a struggling man who, after flying home to L.A. for the funeral of his estranged record-producer father, discovers that the will stipulates that he must deliver $150,000 in cash to a 30-year-old alcoholic sister he never knew existed, and her troubled 12-year-old son.