According to Greta

Rebellious, sharp-tongued, and self-destructive, teenage Greta is sent to spend the summer with her grandparents after being pushed aside by her indifferent mother. On the Jersey Shore, her troubled outlook and unpredictable behavior unsettle the quiet routine of the elderly couple’s home. As the summer unfolds, an unexpected romance begins to challenge Greta’s defenses and forces her to confront the pain she has been carrying.