Atlantis. Many daredevils dreamed to find the legendary island sunken into the ocean. But the young cartographer Milo Thatch is lucky: in 1914 he got a mysterious diary, pointing the way to the Lost Empire. And now the most powerful submarine in the world, under the command of fearless Captain Rourke, goes to the open ocean. Milo and his companions will find many exciting adventures, surpassing all the adventures of Captain Nemo: a fight with the sea monster, ancient mysteries, raging elements, mystical powers, and even a meeting with the civilization of Atlantis! And this is only a fraction of what awaits the heroes on their way to the great mysteries of Atlantis.