Demi Zubov is a veteran of the military and have been an eternity submarine captain. It is characterized by its reliability and loyalty. However, he suffers due to past events under traumatic delusions that seriously affect his perception of reality. When he left his wife and daughter and a secret mission must begin on a nuclear submarine, he is haunted by his past and a criminal KGB group led by Bruni challenged, whose goal is to take control tearing of the submarine and the nuclear weapon itself. With the fate of humanity in his hands finds Zubov to top it all even out, that he was chosen for this particular mission to fail. However, for self-doubt is not a time for a mutiny is imminent.