In the winter of 1944, the Allied Armies stand ready to invade Germany at the coming of a New Year. To prevent it, Hitler orders an all-out offensive to re-take French territory and capture the major port city of Antwerp.

Like in the novel of Jules Verne four persons try to get to the centre of the world by entering into a world of caves by a volcano. On their way they discover among other things also prehistoric animals like some dinosaurs.