Mok Ka Bo is a young lad with a few problems. He's just cut loose from a relationship with Fung, a violent lad who can't accept being dumped and wants him back. Ka Bo takes after pretty schoolgirl Margaret, who is apparently a top student and quite respectable, but has a poor and unhappy home life. Ka Bo also has a difficult relationship with his mum, a middle-aged hooker whose use-by date has arrived.
A man wanders out of the desert not knowing who he is. His brother finds him, and helps to pull his memory back of the life he led before he walked out on his family and disappeared four years earlier.
In the post-apocalyptic future, reigning tyrannical supercomputers teleport a cyborg assassin known as the "Terminator" back to 1984 to kill Sarah Connor, whose unborn son is destined to lead insurgents against 21st century mechanical hegemony.