As the school year draws to a close, a group of high school friends eagerly anticipates their senior prom, envisioning an evening filled with sophistication and celebration. However, their plans take a terrifying turn when a deranged murderer seizes control of their limousine, intent on ensuring they don’t make it out alive. Held captive and subjected to torment, the teens’ unity crumbles as they begin to betray one another in a desperate bid for survival. Ultimately, it is revealed that one of the friends harbored a secret that significantly contributed to their tragic fate.