Hillary finds the Fort Knox Gold and in the process happens upon a submarine. It opens a world to her that she had never dreamed could exist. This amazing adventure takes Hillary deep under the ocean in the most advanced submarine.Attacks by giant sharks, a starfish and an octopus are among the dangers.Admiral Jack becomes a friend and they plan on keeping in touch. All that, a nuclear war and the City Under the Ice in Antarctica give Hillary much to explore, dream and think about for the future.