"Vingt mille Lieues Sous Les Mers — Complete" by Jules Verne is an adventure novel published in 1869-1870. When a mysterious sea monster terrorizes the world's oceans in 1866, Professor Aronnax joins an expedition to hunt it down. Instead, he and his companions are captured by Captain Nemo, an enigmatic inventor who commands the Nautilus, an advanced submarine. Held prisoner, they embark on an extraordinary underwater journey, discovering ocean wonders while uncovering Nemo's dark secrets and thirst for vengeance.