Florida party girl Rex (Roberts) turns out to be the only hope for the NASA space program after a fluke puts her in training with other candidates w

　　五位多年未见的闺密，因为参加其中一人在加勒比海举行的海岛婚礼而再度聚首，闲暇之余，她们决定搭船前往一个无人岛探险，没想到该岛的周围潜藏着饥肠辘辘的鲨鱼，五人必须设法从鲨口逃生……。