Unlock the secrets of the Dragon Eye and come face to face with more dragons than anyone has ever imagined as Hiccup, Toothless and the Dragon Riders soar to the edge of adventure.
During the Second World War, following an ambush carried out in a fort by German troops, Eugène, an Allied soldier, finds himself trapped underground. Now fighting for his survival, his destiny will play out alongside that of another survivor. Both will try to find the resources to extricate themselves from certain death. They are unaware that terrible battles await them outside.