The film follows two prisoners in the near future who are sentenced to a lifetime of hard labor on a distant planet. As things unravel, they become increasingly paranoid and start to lose a sense of who they are and their past lives.。女孩小雪因为和城管冲突被抓进警察局,回家后又和继母发生争吵,阴差阳错下全家人都跟着小雪穿越回了原始时代。一家人分散各处,小雪和从食人族手里救下自己的猿人族“呼啦”成为伙伴,历经生死患难终于找到家人,却引发了猿人族内部的一场疯狂之战……。