An Australian couple takes a sailing trip in the Pacific to get over the recent loss of their son. While on the open sea, they come across a sinking ship with one survivor who is not at all what he seems.
A strange race of human-like marsupials appear suddenly in Australia, and a sociologist who studies these creatures falls in love with a female one. Is this a dangerous combination?
In the future, a health nut and his tag-along girlfriend become trapped in a drive-in theater that has become a concentration camp for outcast youths.