The document discusses how the film opening conforms to and challenges conventions of the post-apocalyptic genre and film openings in general. It conforms by including elements like a dog, a busy road that later becomes ruined, and ordering titles conventionally. However, it challenges conventions by using different fonts for titles, showing the main title at the end for suspense, and having female and unknown gender lead characters rather than exclusively male to attract a wider audience. The purpose is to balance familiarity and uniqueness.