An Afghan soldier wakes after some kind of explosion. He staggers around trying desperately to make sense of what has just happened, only to realise that there might be more to the crumpled wreck of his vehicle than meets the eye, something's terribly wrong...

John D. Crowley is the commanding officer of the USS Seawolf, the leading ship in the submarine S-class. After passing his test, he goes on patrol. Little does he know what dangers he will find on this patrol -and friends- and how easy it is to lose them.