“Penny Lane is Dead” is an Australian horror film centered on a high school graduation party that quickly spirals out of control. According to coverage from both Brisbane Times and The Age, the party takes a turn when a troubled cousin unexpectedly arrives. The cousin’s presence triggers escalating disruptions that shift the gathering into horror territory. The plot focuses on the immediate effects of this intrusion, with the graduation event serving as the backdrop for the film’s breakdown in safety and normalcy. Both outlets describe the same core premise: a group celebrating the end of school encounters mounting trouble after the cousin shows up. While the provided summaries do not detail specific scenes, characters, or plot outcomes beyond the premise, they agree on the central setup—an event marking graduation becomes the setting for chaos once the troubled relative appears. Overall, the story is framed as a disruption-driven horror narrative built around the sudden arrival of someone connected to the party and marked by instability.