Based on Jules Verne's story of revenge, this is actually quite an impressive production that tries pretty hard to deliver a reasonably plausible production of this tale of "Nemo" (Allen Holubar). He has built this magnificent undersea vessel so he can avenge the death of his beloved Princess "Daaker" at the hands of "Denver" (William Welch). Meantime, acclaimed French scientist "Aronnax" (Dan Hanlon) and his daughter (Edna Pendleton) have embarked upon a ship that is sunk by "Nemo" and both of them, as well as harpoonist "Ned Land" (Curtis Benton) are taken on board. Initially as prisoners, b...