The action takes place in Puerto Rico. Anthony Carbone is a crooked businessman hiding out from the law with his wife Evelyn (Betsy Jones-Moreland) and his lawyer Martin (Robert Towne). They are underwater when disaster strikes, something wiping out the world's oxygen. When they return to the surface they find everyone asphyxiated, luckily plants begin restoring the world's oxygen supply before their scuba tanks run out of air.
The film then becomes a love triangle with the two men fighting to assert their superiority. Well it can't end well as you expect. The film is pretty low-budget (helped greatly by killing off everyone else apart from the three main actors of course) and sometimes a bit slow but has some great ideas and the suddenly de-populated world is rather creepy. It is just a shame the new world was not explored more, there must have been other survivors somewhere for example? One silly thing is Evelyn somehow managed to keep her perfect hairdo and supply of lovely dresses even though the two men get reduced to rags.
