A group of desperate daredevils, in search of a new panacea for humanity that has passed half the world on, perhaps, the last operating nuclear submarine on Earth, fell into ice Antarctic captivity. There seems to be no salvation, and yet hope is alive as long as a person is alive. And when another threat looms over the world destroyed by the nuclear apocalypse, "Ivan the Terrible" and his team again go to sea - hoping to win, with the desire to return home. They go out, perhaps, on their last campaign.