A priceless treasure has been resting in the ocean depths for two centuries. The golden throne of ancient Indian kings in the form of a tiger encrusted with gems, in whose forehead shines the greatest diamond in the world - the “Great Mogul”. According to legend, the frigate that transported the throne from conquered India to England , sank in the Mozambique Channel. But Harry Fletcher, who lives on a picturesque island off the coast of Africa and makes a living organizing cruises for wealthy clients, does not believe in legends. He laughs at the company of tough guys from London who chartered his yacht, who supposedly know where to look for the sunken treasure. However, soon Harry is no longer laughing. He understands that the “profitable” clients intend to deal with him and his crew as soon as the search for the throne is crowned with success …