孙白（段博文 饰）是一颗陨石降生在地球上，他的身体上有一个“好”“坏”装置，当他把旋钮调到“坏”模式时，他便成了赵寇，一个集结了残忍、暴力等人类一切缺点、无恶不作的坏蛋，赵寇和活阎王（李茂 饰）杀人无数，为非作歹。而“好”模式下的孙白，则是个天真无邪的十五岁少年，喜欢上了同学郑晓燕（冯文娟 饰）。后来两人结了婚，又离了婚。地球上为争夺领海控制权，几个国家展开了大战，最后只剩下两个超级大国：大洋国和东亚国。入了伍的孙白成为了东亚国的秘密武器，军方用他的血去摧毁大洋国的所有国民，而孙白提出的条件则是一张赦免令。在火车上，孙白又和郑晓燕相遇了，他的任务是活捉他的前妻，一个大洋国的特务......

On Earth, several countries fought a war for control of territorial waters, leaving only two superpowers: Oceania and Eastasia.Sun Bai, who joined the army, became the secret weapon of East Asia. The military used his blood to destroy all the citizens of Oceania, and the condition proposed by Sun Bai was an amnesty.On the train, Sun Bai met Zheng Xiaoyan again. His mission was to capture his ex-wife, a spy from Oceania