When disaster strikes, it is how you deal with it that matters, Barry Roberts underwater shift in the North Sea ends when the Dive Support Vessel (DSV) he is working from is hit by a tremendous storm. When he finally manages to decompress and escape the confines of the diving habitat, he finds that everyone is dead. Eventually reaching dry land he finds himself alone, it appears that a disaster has befallen the planet and he is the only one alive. Barry sets out on a journey home, his search for other survivors taking him south to London, and then south again, after all there must have been others like him that had been underwater maybe on submarines, and if they're on Soviet submarines, is there still more danger? Barry's journey will test not only his mental strength, but will require all his skills to survive as his search for survivors becomes an urgent need not to be alone. In life reality and dreams become intertwined, can you be sure that the life you lead is not just a dream and when you wake up you will find you have a different life? Follow Barry as he struggles to find the answers.