In 2050, Earth has become a dry and desolate place. Fighter pilot Nova is forced to travel back in time to prevent a devastating environmental disaster, however an unforeseen side-effect of time travel makes Nova young again and she crash lands into 2025 as a twelve-year old. Nobody seems to take her and her mission seriously, except for Nas - a neglected teen who tries to keep this mysterious girl and her little flying robot ADD out of the hands of the secret service. Will Nova and Nas succeed in saving the future world?

　　上世纪70年代，一位失踪的武术教师,导师,师长,恩师是他忠诚而聪慧,智慧,睿智,明智但距离较远的学子,门生,弟子,学员（包括蝙蝠侠）搜寻,寻觅,查找,探寻的对象。

　　《特种兵归来4-替身疑云》 延续了前几部的故事背景，叙述,阐述,陈述,描写藤国犯罪集团卷土重来，派出绰号为死神的组织元老启动“重生”计划，犯下抢劫国宝、政治刺杀等重大案件。在阴谋下，龙卫小队蒙受莫须有的罪名，为洗白冤屈联合雅塔、猴子发起反击。几人在经过缜密的计划后，层层攻破敌人关卡，使得真相逐渐浮出水面。最终龙卫等人找到了死神的老巢—末日迷宫。并与敌人展开殊死较量……