A group of five classmates is trapped inside their school bus after a mysterious creature invade the road. Time runs and every passing minute decreases their survival chances against the constant threats of that unknown entity. 　　译文(2): 在一个神秘的生物入侵道路后，一群五个同学被困在他们的校车里。时间流逝，每过去一分钟，他们的生存机会就减少一分，面对那个未知生物的持续威胁。