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The film explores several themes that are relevant to adolescence and the human experience. One of the primary themes is the struggle for identity and self-discovery. The Lisbon sisters are at a crossroads in their lives, trying to navigate their relationships with their family, friends, and themselves. Their struggles are reflected in their obsessive behaviors, such as cutting themselves off from the world and experimenting with sex and violence.

Presas em uma casa conservadora e sob a vigilância rigorosa dos pais, a vida das irmãs se torna um enigma que fascina e assombra quem as observa de longe. É um filme profundo sobre a repressão e a busca por liberdade em meio ao tédio suburbano.