Tidal Confinement

A skilled "waste" sailor suffered a shipwreck and was washed into a mysterious ring of four islands. After experiencing the ultimate hard-core survival and thinking that he was the sole owner of the island, he discovered that there was another survivor hidden on the island - a woman who had been hiding for many years to avoid "cannibals". They went from distrusting each other to forming an alliance. In the process of exploring the island, they uncovered the shocking truth about living on a deserted island. They finally escaped, only to find that the outside world had been changed beyond recognition by the disaster.